My Case Cover from the Camaro says "Basic 1A" and "88" which I assume means it is 1988. The case cover has no other numbers but it was with the WC Camaro case itself which is marked "Basic 2"
and "88". The S10 tailhousing is stamped "13-52-066-933 R1".
The S10 shifter rod had no markings.
I reassembled the top cover per your video and it still will go into 1st,3rd,and 4th but it feels out of whack. If I take the tailhousing off, the trans will easily go into reverse, but not with it on.