I have 396 with the following numbers stamped on the front pad:

T0123IV 7S155382


What do you think it is and what assembly plant is "S"??

Bill, S is St. Louis MO. They built Full size and Corvettes.

The engine is from a full size car, built in Dec 66 and is a 396/325 3 speed auto.

Have fun!

How are you making out on the RS? Any pics?

Thanks Kevin! Slow progress on the RS...trying to get a game plan together on it.