I've got a 1952 GMC 3/4 ton with a 355 (0.030" overbored 350) with 10:1 compression and an Isky 270Megacam hyd flat tappet. It's got 1986 Corvette shorty headers and 2.5 inch mandrel bent dual pipes with side exhaust in front of the rear tires. Still working out the bugs though, but it's quick with 4.56 gearing...a little too quick.