Bengie, what`s the best way to get the old ones off, Dynamite.
A side grinder!
Oh, did you want to save the paint and rivets?
Michael speaks the truth, 'cept if you use automotive paint, add an addl. $100 for a quart of paint, reducer and hardener, too. Buying the compressor, hose, regulator, water separator, paint gun and protective respirator mask wouldn't be cost effective for one-time use, tho.