I tried the XV 3-points in my 1970 e-body. I didn't like them. The retractor is in the way of moving the seat all the way rearward, and if you get close to that position with the seat, the retractor gets at such an angle that it binds up the retraction action of the belt.

I went back to the stock lap belt & separate shoulder belt. Still have the XV's if anyone wants them. Just pay to box & ship.

1970 Plymouth 'Cuda #'s 440-6(block in storage)currently 493" 6 pack, Shaker, 5 speed Passon, 4.10's
1968 Plymouth Barracuda Convertible 408 Magnum EFI with 4 speed automatic overdrive, 3800 stall lock-up converter and 4.30's (closest thing to an automatic 5 speed going)