68 Nova master cyl w/disc brakes

[9566 BA]

Does anybody have a listing of the 2 digit code they stamp on the flat pad of the master cyl? I have a 68 nova with disc brakes . The number stamped in the housing is a 5460346.
I found one with a ZA stamped in the flat area and it shows to be a 68 camaro. Not sure if it was used on the nova or not or if it has a different 2 letter code. Not sure if the GM parts book will show that info?

[WILMASBOYL78]

Pretty sure Nova and Camaro were the same...this chart from the Camaros.org site may help.

http://camaros.org/suspen.shtml#Brakecomp

[9566 BA]

Thanks Wilma