well first how much boost ?? pistons i would say need to be custom made like je ross cp others you need to look at good rods and main caps crank to .you will be making hi EX heat you will need good valves like inconel for EX cam can be made or you may find something that will work head gasket if cometic makes one ? you will have to check if so no need for o rings if not then a copper head gasket will need to be used head studs would be nice