Hey, Aluminum tanks are a great idea. The other important item would be a water seperator. I did look at the compressors and tanks they sell for todays low ryders. There not shy about the price. Maybe a small 110v and a inverter would be cheaper. I come from a trucking back ground so truck tanks come to mind first. But these guys in hot rod industry shure run the price up on the tanks. When I was racing some of the small guys like me were bringing oxy. bottles to the track for there tools. Good luck. Bill