You can get a complete Cheetah PV, 4mil topend, with HotRods crank, for around $2,700. If you got that kind of cash, I think it's your best bet.
Kit Comes with:
Cheetah Cylinder
Wiseco pistons, wristpins, bearings, circlips
All gaskets and seals
HotRods 4mil welded crank
Intakes
V-Force 3 reeds
Head with removeable domes (your choice of size)
Billet powervalves