What tranny do you have? i've got the same ratio, 65 mph and i'm running over 3k on the tach. there have been other posts on this that you can plug all your info in and get so good #'s for different variations.
anybody had problems with comp cam 11-209-3 for a big block? I've got less than 500 miles on it and mine is shot. Just tore it down tonight so I haven't talked to comp cam people. Normal break-in went fine! Ran very nice until this year.
I bought a set powder coated off ebay. Wrong springs, I had to use my old ones.
If yours work good then I don't see any reason why you can't repaint what you have.
Spray them down ahead of time of course, and it might help to hit the head of the bolt with a ball peen hammer if you have room, just take your time. if that doesn't work have a beer or two and wait for more replies!