That is the 84-87 caubeurated engine manifold i was telling u about. Yes it would be a step up to swap in an A1, but i think this guy said he didnt want to swap out his engine. After all if we wanted to take the easy route we'd just swap in h22s or b18s too right(no I'm not a DOHC supporter-SOHC 4 life)?? Also like everyone else suggested u need to make sure that engine is healthy as with any engine before modding it.Especially when going Forced induction.