On my 94 Civvie Caprice SPID, I have the following. Not sure if they came as part of a 'package'. Funny part was before looking at the SPID, I did a small power brake in the car lot to see if it had posi. Surprised the salesman to say the least
B4U - PERFORMANCE PACKAGE, SPORT
GW9 - AXLE REAR, 2.93 RATIO
G80 - AXLE POSITRACTION, LIMITED SLIP
KD1 - COOLING SYSTEM, TRANS OIL
V08 - COOLING SYSTEM, HEAVY WTY
V92 - TRAILER PROVISIONS
Maybe the G80 had to be ordered in combo with the B4U or V92 RPPO, don't know. I bought it used.
Thanks..I have to update the site with my 95 9C1 and with some great shots of my old Caprice cruiser from Real Stories of the Highway Patrol during a high speed pursuit that they taped during the "files" section of the show. The speeds during the taping were over 100, btw.