I drove an ex pro stock Monza for a summer back in the 90's. It had camlock belts.I'll agree that they were very nice to hookup and release,until they didn't release. It's a good thing I wasn't in trouble, just trying to get out of the car. Long story short, there was a set screw that held everything together that backed out. It was under the manufacturer's sticker on the front of the cam. We had no idea it was there or needed to be checked. Never used camlock type after that.