Yes - I used the body tag analyzer (very cool tool!). Although the date code is the one thing I remember the coding on from my prior A-body life. It is a mid-March car. It had the correct YT code (automatic) and the engine # was there as well. Although I did a bit of web surfing and found that the YT code was used on-and-off through 1978!

The trans tag showed 72-PX-67978. The PX code is correct for this car, but I believe the "72" means 1972, so I'm pretty certain that the transmission isn't original.

I didn't check for the block casting date as I'm not sure where it's located.