Having never done it myself, I couldnt tell ya. I've read everything from "it added 20 hp", to "its not really worth it".I’ve read that bumps the compression up less than half of a psi. Is that even worth it?
Personally, I'm more of the mindset of reliability and driveability and being happy at 55mph than dumping tons of money and making it unreliable.
I did the "rv" cam, header, and 2.25" exhaust with 4.88s on 35s on my 84. I was very happy with it