[Lynn]

Lots of weird stories. Supposedly a "mini recall" where customers could get the newer style if requested, but I have never seen any evidence of any such campaign by Chevrolet.

I know both were made, maybe even in the 69 model year. I have heard about GM discontinuing the four clamps style before the end of 69, and that just isn't so. Even late cars could have the for clamps. In fact, I have an FW wheel with its original trim ring and <span style="font-weight: bold">that</span> trim ring has the four clamps. There is a slight difference in the offset between the YH and FW wheel, so the FW trim ring is just about 1/10 of an inch deeper. FW wheels weren't even made until well into 1970, maybe even 71 (or at least for the 71 model year). So, the four clamps definitely were not just discontinued. Perhaps more than one source for GM, and the secondary source had the teeth style.