How do I translate the door marking (whatever they are called) so I know what the rear end is. I've seen allot of RC 52 & 52. Anybody know or even understand what I'm asking?

 

"52" refers to the district code for Dallas, TX.





The front and rear axle codes are as follows:
Rear axle ratio codes (A) are:

18 - 3.08.
19 - 3.55.
26 - 3.73.
27 - 3.31.
H9 - 3.55 Limited Slip.
B6 - 3.73 Limited Slip.

Front axle (B) code.

 

Thanks