Hey, Bowtie,
If you don't have a JCW catalog, you can go to:
http://www.jcwhitney.com/autoparts/...tank&searchbtn.x=7&searchbtn.y=6 and have a look around.
Have a look at P/N WK070065. I also think there's a plastic version of the steel tank P/N WK862180.
I got the steel version, and am installing it right now. It measures (from memory) about 29" X 29" X 9" deep, which fits between my '59 frame rails fine. I have it as far forward as possible for safety reasons. There's about 17" distance between the back of the tank and the fron to the rear bumper (but then it's a Fleetline bed). I'm using rubber hose to keep a flexible link to avoid making any sparks.
You can get a universal sending unit for Ford/Chevy/Stewart-Warner at JCP. P/N WK132950 for GM vehicles with 0 - 90 ohms resistance.
Regards,
Apache Kid
