So it isn't a big deal but I alway wondered if this rear end was born in my Camaro. Casting date is I 198 (9/19/68), foundry control is 1 NOJ, Test mark 7690, on the front of pass axle tube is PA 0924G. I try looking it up on CRG but didn't see were the decoding page is. My 69 Camaro is a Oct 3rd week 68 build car does this match and what is the gear ratio? Thanks for any help.