If you decide to buy a stroker kit stay away from the old reliable 4.150 stroke cranks with the Mopar size rod journals and look at a 4.25 stroke with the BB Chevy 2.2 rod juornal sizes and a 7.100 long forged H beam rod with a D dish piston to stay under 9.50 to 1 compression ratio to run on pump gas with iron heads, if aluminum heads pump the compression up to 10.50 to 1 ratio Strokers are a kick in the butt to drive