73 dart seat frames??

The Legendary seat covers are about 2 inches short across the top of the back (from bead to bead). The bottom they sent me did not have the listings sewn on, so I returned them to be fixed, but they appear to fit. Legendary says they have the "correct one" for sale. I just find it hard to believe mine aren't the originals because the original owner kept every part that he ever took off (which I have). But, I guess stranger things have happened.