Sure, again, just for fun. Let’s look at 68 first: For 1968 there were 235,147 Camaros made, and of that number 40,977 were Rally Sports and 7199 Z/28s. The calculation is:
(40,977/235,147 * 7199/235,147) * 235,147 = 1254.
So, if the assumption is reasonable, a ballpark estimate of the number of 68 RS Z/28s made in 68 is 1,254. And please, please, please, remember this is just an estimate. These numbers based on a gross assumption. I’m sure there are plenty of people that would argue that our assumption is wrong. For example, I’m sure some people might say that the RS option was a “luxury” option and there would be far less ordered on Z/28s than on regular Camaros.
That brings us to the 67s. Even I don’t think the assumption would be valid for 67. What I mean is, in 1969, with over 20,000 being ordered, I'm sure there were plenty of Z\28s ordered for racing, but there had to be a lot of regular people ordering Z's because they were cool, and by then, a lot of the public had heard about Zs. In 1967, the public didn't really know about Z/28s and I suspect that most of the 67's were ordered by racers or people with factory connections. Some of you 67 guys on here can tell me if that is right. So, I don't think many racers would want to add the weight and cost of the RS option so an assumption that sounds plausible for the 69s is probably not a good one for the 67s. I'm not really a 67 and 68 guy so anyone feel free to put your 2 cents in here.
Anyway, I still think it’s fun to run through this stuff and see if the numbers make sense. Until we get better data, it’s the best guess we can make.