help finding proper heads...

Awhile back I had an issue where I found out one head was milled .040 more than the other head. I ended up using Crane Iron ductile adjustable rockers, and shims under the rocker bar to make up for this. Ive had it this way for 2 years now and it works, and runs well... however I have ticks and things and it just bothers me.
It sucks because these are slightly ported and have 2.02 valves and valve job with hardened seats with about 3000mi. I just don't want to be running shims, and I have to figure out these "ticks" anyway.
What can I find comparable that is similar and proper and at what price?
any recommendations? I like to stick with 2.02 valves because it seems to run right with my application.

I keep hearing about using late 80's early 90's 318 heads. Is this true?

Thanks!!