WTB: Air compressor tank (tank only) 30 Gal or larger

I am looking to build another compressor, because I am sick of moving mine between locations to do work. I have a big ass electric motor and found a nice 2 cyclinder head for it. So i just need a tank(s)

If anyone has a tank laying around or knows where to get one on teh cheaps, lemmi know.

33 Gal or bigger. 150psi max is fine. 60-80 gal would be perfect. I say 33 becasue I can find another one at some point and put them together to make a 66. :thumbup