Here is a pic of the AAR fiberglass bolt-on trunklid top. The pic of the bottom I took turned out too dark to be useful !
A couple caveats :
1. Adjustment is made via the trunklatch. Is your latch support in good shape ? AMD sells new ones if not.
2. Depending on year, you may have problems reaching the bolts when bolting the inner "steel inserts" My car is a '72, and I believe the other years have a slightly different config. AAR just cut out a little recess, so I could reach my ham-fists back under there.
3. Be prepared to do a lot of "futzing" to make it fit right. Recommend a new trunk weatherstrip. You'll need to read the instructions in your FSM body manual - they sound a bit odd, but the instructions work when followed to a "T" - esp the overlap part.
Good luck.