So I'm trying to replace my head on my 2000 Accord LX and I pulled out a head from my junkyard. But after cleaning it up and comparing it to my old one I can see they have different casting codes, mine was PAA-9 vs the one I pulled being PAA-7. They both came off accords with F23A1 engines the only difference was that the one I pulled came of a coupe opposed to my sedan. Just wondering if anyone know whether or not I could put the 7 on to replace my 9 or if I need to go switch it out.

Thanks!

 

If it's an F23A1 head then it's and F23A1 head. If you have measuring calipers you can always measure the valves and the cam lobe heights to verify.
Off the top of my head I don't know of the F23A4 uses a different camshaft.