Seatbelts

74 had the seat belt interlock deal. There are occupancy sensors in the seats and switches on the buckles. From what I've read you couldn't start the engine without having the belts buckled. My orange car still has this module under the hood, but the rest of the system has been bypassed and/or removed.
Module.PNG

So, I'm assuming you or a previous owner did the same, but it still something to be aware of.

But back to the belts themselves, are you having an issue with the retractors? That's what been bugging me. Mine are really sensitive and if you don't pull the belts super slow and even, they'll grab. I'm looking at going with these, since I have the integrated shoulder/lap belts:

Seat Belt Replacement - Wesco Performance.PNG