Boyd Welding-67-72 Rear Mount Aluminum Tank

[chevy71c10]

Hello all, I'm new to the site as I have just begun a frame-off on my newly purchased 71 SWB. Current plans are for an LT1/700R4 swap with rear mounted tank. I have read several discussions regarding the rear mount tank (which i'm planning for) and most are for having the filler either in the bed floor or in the stake pocket. I was really hoping not to have to modify the body and get a tank that would allow for a rear/center fill that I could access via the flip-down tag bracket. Anyone have any advice/concerns that I should consider? Thanks all and really enjoy all the great comments I have found thus far.

Respectfully,
Justin