Fuel tank/sending unit questions

[Dan Schachner]

I am fabricating a flatbed for my shortbed 91 and I had a question about the fuel tank. I need to fab up new mounts for the fuel tank and thought it could be a chance to go to a 23 gallon tank since I can accommodate the extra support strap. Also, I don't need to worry about the filler neck position since there won't be the bedsides in that spot. Moving it further back is actually better for the boxes I want to make for it. 

 

My question is, will a fuel pump and sender unit for the 23 gallon tank work with my current fuel gauge? Or will the original pump and unit from the 18 gal tank work?

[89 MJ]

The 23 gallon tank will run into the rear axle on a SWB truck. If you tried to move it forward, I would suspect it would run into some of the cab support stuff. If you want more fuel capacity, I would look at something that could occupy the space where the spare tire went originally.