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Elvis Presley owned this GMC pickup. Now you can, too

Befitting his status as America's first rock star, Elvis Presley lived large. Among his many excesses, Elvis was well known for his prolific new-car purchases. Mostly, it seems the King favored Cadillacs and Lincolns — although, during his Army stint in Europe, he picked up a BMW 507 roadster. Here we have something different from the Elvis Presley canon: a 1967 GMC pickup. And this GMC will be crossing the block at the GAA Classic Cars auction on February 27. This GMC is one of three that Elvis purchased from Guy Caldwell Motors in Senatobia, Mississippi, almost exactly 54 years ago: on February 7, 1967. He bought a red one, a blue one, and this green one for use on his Circle G Ranch in Horn Lake, Mississippi. According to a badge on the glovebox door, this pickup is a GMC Cheyenne Super, which sounds like a fancy-pants trim level, although the truck still looks pretty bare-bones to our eyes. The steel wheels have dog-dish hubcaps, and the grille and bumpers are painted white rather than chrome. It's a standard-bed half-ton pickup and is powered by a six-cylinder engine with a three-on-the-tree column-shift manual transmission. The truck spent just over a year on the ranch before being sold off. It then went through a series of owners and several museum stints. Among the paperwork included with a sale is a letter from Elvis Presley Enterprises confirming that a GMC pickup with this VIN number was bought new by Elvis. It has now been restored, so there shouldn't be a whole lotta shakin' going on. The truck has been repainted green, although the side mirrors are different than what's shown in a vintage photo, and the chrome trim along the sides is missing. More notably, we'd like to see the "Circle G Ranch" logo it once wore on its doors be added. No pre-sale estimate is given. The final hammer price for this GMC will depend on the degree to which bidders are all shook up at the prospect of owning one of the more unusual Elvis Presley vehicles.

Chevy's 6.6-liter Duramax is pretty much all new

To say there's a heated battle in heavy-duty pickups is an understatement, with Chevrolet, Ford, and Ram constantly trading blows of increased torque, horsepower, and towing capacity. The latest salvo is the revised, more powerful turbo diesel 6.6-liter Duramax V8 in the 2017 Chevy Silverado. It has 910 pound-feet of torque, an increase of 145, putting it nearly level with the Ford Super Duty. Here's a closer look at where those gains come from. How exactly did Chevrolet add all that torque plus 48 horsepower? The automaker essentially took a fine-tooth comb to the entire engine. Chevy says it changed 90 percent of the V8, and the cumulative effect of those small changes adds up to big increases. As you might guess, the turbocharger is updated. The larger unit features electric actuation of the variable nozzle turbine (VNT), and what Chevy calls a double axle cartridge mechanism that separates the VNT moving parts from the housing. That helps with heat performance as well, with a claim that the exhaust side of the turbo can run continuously up to 1,436 degrees Fahrenheit. Helping that cause are six exhaust gaskets made of Inconel - an nickel alloy that contains chromium and iron – and upgraded stainless steel for the exhaust manifold. Despite having the same cast iron cylinder block, albeit with some minor enhancements, the engine has new cylinder heads, pistons, piston pins, connecting rods, and crankshaft, which have all been upgraded to handle 20 percent higher cylinder pressures. Alongside the increase in pressure, Chevrolet also increased the cylinder head's structure with a honeycomb design. The pattern features high-strength aluminum with dual layer water jackets that not only improve strength, but also optimize water flow for better cooling. For 2017, the cylinder head also benefits from integrated plenum that aids the engine in getting more air under heavy loads. The cylinder head isn't the only component to get a minor update, as the pistons have a larger diameter pin for improved oil flow. The same detailed improvements has been bestowed to the humble connecting rods (second in our hearts only to the inanimate carbon rod). The new design has the bolts oriented roughly 45-degrees to the rod instead of parallel. The angle split design, as it's called allows for easier passage through the cylinder.

2020 GMC Acadia refresh brings a new engine, AT4 trim level

It's mid-cycle refresh time for the GMC Acadia, and the updated 2020 model kicks off its changes with a new face. It has a square-jawed grille seemingly pulled straight off the Sierra full-size pickup, and the size is amplified by the slender new LED headlights on either side. At the rear, the LED taillights are taller and more chiseled. A new AT4 trim level adds more visual distinction with black trim and wheels, plus all-terrain tires to make it a little more capable off road. The AT4 also boasts standard all-wheel drive. Under the revised skin, the Acadia hides one of two carryover engines, or a new turbocharged 2.0-liter inline-4. This new engine makes 230 horsepower and 258 pound-feet of torque with the help of a twin-scroll turbocharger. To make it more frugal, it's able to deactivate two of its four cylinders. The turbo engine is standard issue on the SLT and Denali trim levels. The carryover engines include a naturally aspirated 2.5-liter 4-cylinder making 193 horsepower and 188 pound-feet of torque, and a naturally aspirated 3.6-liter V6 making 310 horsepower and 271 pound-feet of torque. The V6 is standard equipment on the AT4 trim. No matter the engine, all 2020 Acadias get a 9-speed automatic transmission. The new transmission also ditches the current Acadia's mechanical shift lever in favor of an electronic shifter with the Terrain's mix of buttons and triggers. It does free up space between the seats, but the button arrangement is still as strange as it was when we first saw it in the smaller crossover. There are a handful of other little upgrades to mention. The suspension has been revised for greater comfort; the infotainment has been revised with a bigger screen, USB-C inputs and customizable profiles; and wireless phone charging is now an option. The updated Acadia goes on sale this fall, and pricing will probably be announced close to launch.