A quiet compressor?
I did a frame off restoration on a Chevelle with a small Husky compressor including using a glass bead cabinet so you can make a small compressor work but there is a trade off and it's really about time management....
However put a small amount of cash (few hundy maybe) and watch your local area for industrial auctions such as a manufacturer closing. I have hussled a bunch out of these places and somewhere in the depths of the plant there will be a lonely smaller compressor (big to you) that you can rob the cradle for. Seen it time and time again. Buyers of equipment and such walk right by those things as they don't meet the needs of the equipment and a deal of a lifetime can be had....
JW