I plan to use my 54 1/2 ton as mostly just a general use pickup, but with a few nice modifications and updates here and there. (It was not stock when I acquired it---has a mid-60's transmission and what I think is an 85 Impala rear end.) I have removed the gas tank from the cab. I intend to get an underbed tank but would prefer not to fill it through the bed. I am looking at an underbed tank from Chevs of the 40's that has a side fill option. It looks like I can probably end up filling it through the fender but that obviously involves some body modifications, which I'm willing to do if that is the best or only option. I would appreciate hearing from folks who have either done the above or some other out of cab placement that has worked for them. All help appreciated. Thanks. Williejoebob