I just did a search and nothing came up but I know the subject has come up. I'm presently working on the cab of my 46 1/2 ton and took the tank out today. The bottom was half rusted out. I want to install a tank in the rear as I have seen some 1/2 tons where this was done. I was wondering if anyone has done this and has any kind of suggestions as to what tank I should get. The company that makes the tanks can go back to any chev truck or car to 1955. I want a tank that I can install in the rear between the frame rails. I installed a crossmember for the shocks and I believe I can use it to strap/bolt a tank on. Thank You. Bob T