ok guys here is what ive got. i bent the valves in my d15z1. I have a spare d15b7 with a massive rod knock and i have a jdm d15b with a locked up bottom end. regardless, the pistons are good in the b7 and d15b. I have a z6 head that i milled .075 off of. Now to the real question. will the d15b pistons work in the z1? i have searched and searched but no deff answer. If they will work then i am gonna put the milled head on the z1 with the d15b pistons. or with much milled off of the head will the head work with the z1 pistons?