I Bought this truck as a Custom order from GM, bought brand new. This Truck is a bored 6.2l L86 to a 6.4l. Has forged internals and a Ls6 cam, LT4 heads with Comp springs, steel rocker arms, ls7 hydraulic rollers and chrome molly pushrods. Has pacesetter headers and runs on e85. transmission is also built for about 900hp. when it was Dynoed it made a surprising 653hp and 625tq, about 50,000 miles ago. Trucks Name is Moby because the driver is a d___.