[KrNxRaCer00]

well, either motor, ur going to have to get some lower compression pistons, an build the internals a bit to run the 10-12 psi u wish. but after building ur block a bit more, u should be able to turn it up past that psi even. if u put a turbo on either motor, u'd be able to run 6-7psi safely, an inside of a teg, that'd be a 13 second car, easily.