Fast85,
Here's the codes I have, they are also posted in the Specs section in this forum:
AG9-power driver seat; AQ9-Sport seats, leather; AU3-power door locks; CC3-removeable transparent roof; C49-rear defogger; FG3-delso-bilstien shocks; K34-cruise control; KC4-engine oil cooler; L98-engine; MXO-700r4 auto trans; NA5, maybe NN5?-Calif. emissions; Q2D P255/50Vr16 tires; 13L/13U-Siver Metalic paint, lower/upper; 15V-medium gray interior/sport seats; UU8-stero system Delco-Bose; VO8 Heavy duty cooling; Z6A- rear window & side mirror defoggers.
Z51- sport suspension inludes; FG3, VO8-heavy duty cooling ,extra radiator fan - pusher; heavy duty front/rear springs, stabilizer, bushings, fast ratio steering, 16x9.5 wheels.
The black book doesn't have any of your other codes. Try the Covette National Museum - they will reproduce your build sheet for a reasonable fee.
At any rate - you've got a great Vette. One of the magazines just had an article rating all of the C4's against the C5's and said that the '85 and '86 are the best of the bunch for handling.
I'm sure we'll hear a lot about that statement!
Dennis