M code barracuda

I run the 440 M code Cuda Registry, Formally Tom Wenstadt then to Dave Goodwin and now to me.
The supposedly last M code 440 Cuda is the 357. So roughly 299 fastback and 58 notchback from research. From what I have here and would say the first batch close to 30 were Notcbacks built by the numbers. (I am sure there was a fastback or two built first as the registry starts out with the 4th car built). As we all know the first was a fastback prototype. The next batch after the Notchbacks were fastbacks, I can’t put a number on how many. Then it was a mix but from the numbers mostly fastbacks. Ordered Build dates were December 1st 1968, roughly 210 built, March 2nd 1969 roughly 120 built and May 18 1969 roughly 27 built, These numbers are just estimated from what information I have here in the registry). All M codes were automatics but supposedly a few had dealer installed four speeds but there is NO documentation of that.