Shoulder Belts In A 68 Barracuda Convertible HOW and WHERE?

The only thing I can offer is this thread:

(Some of it came from the hamtramck webpage)

http://www.forabodiesonly.com/mopar/showthread.php?t=184851

Thank You.

I found on the Hamtrack site were the shoulder belts were optional for the convertible in 1968 under 568 shown below.