Adding a sump in tank

Don't think there's enough room to keep your spare tire well and put a fuel cell in. I had to eliminate mine all together in order to run mine. Unless you have a custom cell made that's shaped like a U that straddles the tire well. Just brain storming. I'm actually in the same boat with my fuel tank, I'm trying to figure out how to weld a lowered sump so my pump can be gravity fed as well. If I figure something out ill post pictures.