It pays to have friends who pay attention. We got a call this morning from Mike Levine at Pickuptrucks.com who told us we were sitting on something big and didn't even know it. He pointed us to our gallery of live, high-res images of the 2010 Ford F-150 Harley-Davidson from last week's 2009 Chicago Auto Show and said, "Look at the engine." Our images of the HD Edition's motor did not reveal the ubiquitous 5.4L V8 with which were told the truck would launch, but rather a bigger engine covered by a plastic shroud emblazoned with "6.2L Boss". This engine, which produces 400 horsepower and 400 lb-ft of torque, is only slated to power the F-150 SVT Raptor at the moment. That makes its attendance at the '09 Chicago show beneath the hood of the HD Edition quite surprising. Levine contacted Ford about the Boss being in Chicago, but a spokesman for the automaker commented, "The only engine confirmed for the Harley-Davidson F-150 is the 5.4L V8 it will launch with." Read into that all you want, but we'd venture to guess the 5.4L V8 won't be the only engine under the F-150 HD's hood for long.