Originally Posted by timbowabo
Good to hear streetfocus. Thanks.
I'm being told wiring is going to be a problem.
Anyone know for sure what I can expect?
You will found the 23 has imtv, unlike the 20. Both use the imrc thou. I'd figure out if you can use the 23 head (after doing a valve job) on the 20, w/ the 23 intake manifold, then you shouldn't have any issues, w/ the pcm. You'll see the 2 electronic vacum switchs on the 23 & only 1 on the 20.