LIST OF REAR CODES/NOT RPO???

[BosMobile]

hey guys ,well i finaly crawled under the car ,to get the code. now i cant find a list to verify .its 83 cutlass ,7.5 one wheel peel.the code on frt. rt. axle tube is 2AK .i know theres a list somewhere,now i cant seem to find it. thanks for any help and sorry to post a rearend ??? later BO

 

[BosMobile]

FOUND IT

classicoldsmobile.com/under diff identify,and as expected,ive got 2.14s. good news!! it cant get any worse... i wonder what the highest gear they ever used was??... later BO [oh,2AK is 2.14s]