Building an Under Bed Fuel Tank from Scratch

[duwem]

Anyone built one? Doesnt appear to be much to it. Build a box, add the flange for the fuel pump (doing a fuel injected GM engine), add a filler neck and some mounts to attach it to the frame. I assume some baffles inside would be good, probably just some vertical plates running almost all the way to the bottom?

I have a tig welder and would want to make it out of stainless.

Can I get the fuel pump flanges from somewheres? Weld on filler neck parts for a bed floor filler?

I have seen them priced for $900-1000 with a pump. Have to think the pump is $200-300? Maybe $100 in materials? another $100 for a real nice filler? Thats 1/2 of what a purchased one runs.