Sooo...I know nothing about Hondas, bought a 94 accord last month, and the head blew 2 weeks ago. Just realized that it had a motor swap the engine inside is f23a4 and the head casting number is PAA-HA9. I could not find ANY PAA-HA9 and purchased a POA (yeah--I know nothing, haha) so after spending money on EVERYTHING there is a leak on the back of the head, obviously the wrong head. Does anyone know what head I can use or what I can do? I doooooooooooon't know, help please!!