core 'revision' number...BS? BUSTED!!

It is possible that if there are any left over parts from the May pilot build, they will be used for the start of production if they are off production tooling...

Example: The foundry that casts the block is not going to just run 20 - 50 blocks just for that run... They will run a few hundred or more to put their tooling to the test for production...

Then the engine assembly plant is going to need many parts to test their processes... They need to run them through each station on the block machine line to prove out the tooling for machining them... And the engine assembly line is going to need parts to test out their tooling and fill the line for launch... This could easily take a few thousand blocks....

They are not going to wait until the week the build is due to order the parts, they are going to get a jump on it and have a stock of parts on hand to start the launch... They could easily make a few thousand blocks in April - May to get ready to launch in June....