So im looking at getting the 1980 gmc suburban gas tank for my 68 ford f100. I was wondering what you guys did for the sending unit to get it to work with the stock gas gauge. And if you needed to add a vent and return line to it. I plan on running this in my truck and i have the atomic efi system which needs the return line. I have a mustang gas tank but i dont want to cut up the frame for it to work.