I would like to date my Turbo400 and 12 bolt limited slip ...

[Zone47]

.... to see what year they are.

I tried waving flowers at them but they don't seem interested.

(sorry, had to get that out of the way).

I'm pretty sure the truck (68 C10) came with a 6 popper and 3 speed on the column, so the turbo 400 is out of something else and I doubt they would put a 12 bolt into a 6 cylinder truck.

Anyone know where the numbers are on either and how to decode them? Thanks.