Whatever you do, don't butcher it!! put it back to original 76 FF spec, and enter it into Historic events, do you have any of the original body moulding's, or the moulds for that matter... changing the spec would be absolute sacrilege, don't do it!
Find the original driver/owner, and put some history, and provenance behind it, even re do it in its original livery... that could be an extremely valuable car one day

Thom