Ok, I've got a couple of questions...I searched but didn't really find specific details I need.

Ok..let's talk about h22a1 series oil pump: is it interchangeable with a h22a4 series???( will a a4 series pump work in a a1 series). If so, is it a straight swap??? If not, what mods are needed to make it work (a4 to a1). Lastly, is there a aftermarket oil pump upgrade for the a1 series oil pump?? How's prodrive??

 

the h22a4 pump has the crank sensor on it, with the magnetic pickup, the obd1 h22a1 doesn't have it, cuz its in the dizzy

prodrive is ok to use