I'm going to be inquiring a block for free and i need a new one. Right now it's in a crx and it has the z6 bottom end and a d15 head on it, not sure which one but he said it's obd0. Is it the head that makes it obo0? Could i just slap on my b7 head and call it good? or do i need a new ecu and what not cause from my last thread i want to run notec. Sorry for the newbie questions.