a body driveshaft

Too long, IIRC. He needs a DS in the 45" range and that one should be about 49"

I also have the one from that 67 Convertible that was a 727, with the 8 3/4 rear. That one is 45.5 from end to end, and about 44.25" center to center on the U joints. Same price! 8)