Due to the constant discussions of air compressors, I decided to ask the people most in the know. I have a portable 4hp compressor with a cast iron 2 cylinder pump on it. The tank has rusted out, I think it is a 20, maybe 30 gallon tank horizontal but cant really find a tag that says so. I have been looking for somewhere to buy a similar tank that I can replace it with, it doesnt have to be an exact mate, I can adapt the motor and tank to most anything. The motor and tank are too good to junk and I have been looking for a new or used compressor to replace it with but so far havent come up with one so may try to replace the tank if I can find one. I have looked in all of my catalogs but so far havent come up with anything. I can remember seeing replacement tanks somewhere years ago but not recently. Any suggestions where to get one. Thanks Jared