It all depends on which belts you're referring to.
For 1968, there were 22,988 Coupes built with the AK1 "Custom Deluxe Seat and Shoulder Belts".
There were 70 Convertibles built with the AS1 "Standard Front Shoulder Belts".
There were 109 cars built with the AS4 "Custom Deluxe Rear Shoulder Belts".
There were 24 cars built with the AS5 "Standard Rear Shoulder Belts".
There were 222 Convertibles built with the A85 "Custom Deluxe Front Shoulder Belts".
So you can see the numbers vary with the model (Coupe -vs- Convertible), and the style (Standard -vs- Deluxe).
NOTE: This information was taken from Jason Scott's "Carmaro Restoration Guide (1967-1969) and may have errors. The
CRG shows conflicting data so you might want to go with that. It's porobably more accurate... Make sure to look at the
PDF also. It has more info in it.
Ed
Ed