'72 and up A-bodies used a return-type system with a 3-tube fuel filter to help eliminate vapor-lock issues. You could order a set of resto lines and option a 3/8" feed if available, used in conjuction w/a 3/8" pick-up assy., You're most of the way there. While the '72 and up cars used a charcoal canister, You don't need to worry about that unless You'd wish to add that, just make sure the vent-line in the trunk is clear & not kinked.
Also, there is a check/restriction in the front end of the return tube, You may want to eliminate that for an EFI return.
