Well I got the new tank from Ebay, it is a 15gallon tank that fits a Jeep CJ. Here is a picture of it hung behind the rear axel of my 1940 1/2 ton. I am happy with the fit. I think I still have good room for the dual exhaust to go past on each side when I get to that. Thanks for the advice you all gave on my post about the tank search. tank picture
Thanks,
Bob