One thing is if you are going to play the date code, paint dab, oem game on your car it is going to cost more money.

There were various trunk lids during the years of production. There were changes for the Spoiler, the Wings and maybe the luggage rack. I am not sure exactly how many trunk lids there were over the years including 72-74, but it might be 3 or 4 different lids. The trunk lid you have now can it be leaded to bring it back to an original look. A picture of the lid you are talking about might bring some other answers to your question.