Fuel Cell

For those of you that still have the stock truck pan with the spare tire well, but are using a fuel cell can you post some pictures of them. I'm wanting to change my dead head fuel system to a bypass system. I'm thinking of getting rid of my stock tank and going with a cell, but don't want to cut the trunk up. Or does someone make a stock tank that accepts a return line (Car is a 1973 Duster)?
It would probaly be cheaper to put a fuel cell in it. But a place called tanks Inc makes a fuel tank for your car.

https://www.tanksinc.com/index.cfm/...ct_id=481/category_id=68/mode=prod/prd481.htm