I used a 1965 truck 225 block, bored .100 over using Buick 225 V-8 pistons with the wrist pins sized to the Dodge pins about 12:1 comp ratio, shop made 4bbl intake w/Carter AFB 450cfm carb, the Hyper-pack cam and valve train, Clifford header w/dual exhaust, stock 3spd trans with an 8.75 rear...