90 Crew Cab fuel tank option

[67-stepside]

Hello, My 1990 Crew cab short bed is at the body shop. I have to decide if I want to use the stock dual tanks or relocate the tank to the rear in frame. I think it would be easier to do the rear tank just wondering about the filler and what to do there. If I go with the rear tank the stock fuel doors can be welded shut before paint. If I use the stock tanks I'll have to change out all the hose and clamps for high pressure style. What do I do with the return line also?
What is everyone with the dual tanks doing? I'm leaning toward relocating and have nice clean sides without doors or tanks hanging there. Any advice?

[67-stepside]

Well that settles it! I relocating the tank to the rear.