Link to older posts on this:

https://board.moparts.org/ubbthreads/ubbthreads.php/topics/1934775/1.html

Basic Info from my Purchase:
I ordered a Spectra Performance CR9CFI Fuel tank ('69 Coronet) with internal pump from Amazon ($366.02) to try out.

It looks pretty nice. Made In Canada.
The Fuel Pump that it comes with is a Walbro (USA) GSS342, 255 lph pump which should be good for 500+ HP?
There is a tub type baffle/sump in the tank that the pump sits in.

The Outlet is 3/8" tube like a stock pickup (no -AN fitting), and the return is 5/16" tube. My EFI has -6AN fittings so I used some male -6AN to barb fittings and short pieces of rubber EFI fuel line to connect the tank fittings to the barb/-6AN fitting (adaptor.)

Read the second page of the link above about the issue of the fuel pump wiring.

It looks like the TanksInc tank is now ready for sale. When I bough the Spectra tank they were still in development. $245 for the tank + $220 for the 255 lph pump (module) + $35 for the sending unit.