Part number ID help.

[69L72RS]

Anybody know what pt# 3936444 was listed for? It is a limited slip carrier.
Thanks in advance.
Eric

[SS427]

I show this as a differential carrier/case for 66-67 Chevelles, 67 Chevy II, 67-70 Camaro, 68-70 Nova, 68-70 full size with 2.29, 2.56 or 2.73 rear 12 bolt axle and positraction.

[69L72RS]

Thanks for the help.