Its really nothing exotic, pretty easy numbers to hit with a stroker crank and some good heads. Here are the basics; Mine uses a Scat 4.125 crank, Diamond lightweight pistons, Carillo rods, good port job on the heads (spend your money on head work) flat tappet hyd cam (its pretty aggresive but not noisey). The carb, intake, and manifolds are 100% stock, manifolds were Extrude Honed but that only gained 3hp. The same engine would easily make over 500hp with an intake & carb swap and headers.