It has been too long since we actually cut a set here. You are stock 15 degree but the notches are moved to open on cylinder centerline. If you call wiseco and ask for Vic Ellinger he should be able to answer those questions. Typ we have the notches .300 deep so if you are trying to renotch std 440 pistons won't work on most as head of piston not thick enough and top ring position too high on most std pistons that intake notch falls into top ring.