two schools of thought: do you want to KISS and roll or are you thinking long term and want to "future proof" the car?
on the cheap i'd just grab a tank that's in the $100 range (probably a spectra) and a spectra pick up (i've had decent luck with these) and then get the good seal and lock ring from DMT and ship it. bend up some line or hit up inline and order the kit and call that part done. figure out a pump and you're squared away there. reuse your brawler and just get it tuned in right.
however, if you're thinking more power down the line and fuel injection, i'd just push the easy button and order up an EFI tank from tanks inc and get the corresponding sending unit for the gauge and the regulator kit for a carb engine. the wiring is dead simple and if the pump craps out it's a popular piece that you could get at a parts store and swap if need be. then if you wanna switch to EFI later you just need to change out the regulator.
all of it kind of hinges on what direction you want to take the car and how much money you want to spend along with what are your feelings on regulators and electric fuel pumps and assorted wiring.