I have the XV belts installed in a 72 Cuda. Much better than the stock shoulder belts but even with the drop they feel like they would crush my aorta in a collision (6 foot). And the retractors lock by movement on the belt, so they have to be coaxed out to buckle.

More drop would work. The car just went back to the body shop so I can't measure the drop length, will compare to the van conversion belts when it comes home.

remember when you said honey, some day that car is gonna look so good in front of our house