That's interesting. I wonder if there's a way to retrofit belts from an 89 convert to your 91, just using the different seat belt bezel. Anybody have any clue?
I think there must be a way to adapt older belts to your car. I find bezels and clips if you need to replace those, but I can't honestly think of a reason why older belts wouldn't work. Anybody have a 90-93 drop top that can give any input?