as i said in the other ef place,my b2 took a crap.im swapping motors and here is the pieces i have,d16a6 block,d15b7 block and head,and a crappy d16b6 head.i was thinking of the a6 block with the b7 head?(probably the one ill go with)...or b2 head on b7 block?(doesnt sound too great)someone let me know please. tranny is off the a6,doing non-v for now until im ready for more wiring.please help me out with what would be best.and please...no answers like go with a z6 head...im only using the parts listed above. oh yeah how do you know if your ecu is bad?