318 head porting for the average joe

I have a distributor already for the lean burn ectomy. And, I have an NOS BBD that was destined for my slant 6 build for something else. I also have a 500 and a 625 edelbrock afb that could work on that Fury or a couple of fresh ready to go TQs to boot. It is a nice highway car now... I want to make it better.
On gears for an 8-1/4 they used the 8-1/4 in cherokees too some of which came with 3.07/. 3.08s. so they are available. If I do the ring and pinion swap I'd go either 3.08 or 3.21/3.23.
Now on keeping with the thread, can I do anything with my 302 heads to make them worth swapping? I do still plan on swapping in a small cam at the same time whether it be something along the lines of a 252 or the 260 that I already have.