One way to estimate the production of D5 blocks is that all of them seem to have the same casting date (Jan 19 1970). The few casting times I can find (on your block and a -2 block, see pics) show the same, noon.
Also found a picture of another -2 block, also cast Jan 19 at noon.

Tomkelly: How many blocks were usually cast in a batch?

This is of January 19 20 21 and a few other in January they cast plenty of block that ended up in 1971 Hemi Cars. My November 5th 1970 1971 Hemi Cuda has a cast date of either 19 or 20 of January 1970. I also off all things have a 1971 440-6 block that was cast January 20, 1970. So Chrysler was raping up cast both Hemi and 440 block in January of 1970. After these block were used up things started to get unconventional with Cast Dates. My 1971 Hemi Challenger has a Casting date in 1969 and was built in June of 1971. Lots of other build in June of 1971 both E and B Bodies have the 11 11 68 casting on the blocks. This is one example of Chrysel not used First in First out FIFO and was just grabbing the first block closest to the door.

After reviewing this thread again from the beginning, Dan and Tom have provided some good data on motors built and cars built but it is broken down by year. Is there any data with cars built per month for hemi, regardless of model? My curiosity is in how many accessories required for the motor built going to the plants for assembly.

Distributors and my main interest Carburetors. How many carburetors was Carter making in batch to support the motor builds for cars as example.

I've been told that Hurst made 66 Hemi Darts and 53 Hemi Baracuda at one of the old Mopar drag seminars before 1980 when they went B.K. the first time stopping those seminars
I've also seen on the internat that Hurst had a bnch more 1968 Dart bodies that they never finished and sold them to racers to make their own race cars out of those unfished rolling cars