I used to watch SNL back then, when it was good with the original cast. You are probably aware of this, but there was originally a plastic bushing that held the shoulder belt clip snugly to the lap belt. Those plastic bushings broke fairly quickly when the cars were new, and there was a recall to install two little rubber bushings onto each latch. Mine '71 belt clip had nothing, so I would clip the shoulder belt to the lap belt and it would just slide off while driving. So I rigged up a rubber band temporarily to keep the two buckles together. Then I discovered the recall and found that numerous vendors online sell the original little packs of rubber bushings from the recall. You could even find a similar size at someplace like Home Depot. With the rubber bushings in place the shoulder and lap belt buckles remain firmly latched together. It's certainly not as safe as a modern car, but I feel better with the shoulder belt latched securely in place. Back in the early 80's I was a passenger in a low speed crash (cruising around in snow and ice when we shouldn't have been) in a '73 Mercury Montego which must have had the shoulder belts removed (friend's parent's car). Anyway, with only the lap belt in place the bridge of my nose met the dash pad in the crash. Broke my nose and the blood made quite a mess! Car was totaled, actually bent at the roof.
