Option codes

[79 GP 4 speed]

I'm not sure if Grand Prixs came standard with a radio but if they did it would of been most likely the U63 AM radio with U76 windshild antenna.
The stock shifter for both 3 & 4 speeds would of been made by GM's ITM division (better known as the Inland divison of M1 carbine fame) & are almost exact copies of a Hurst Comp Plus.

The reason I asked about the shifter is my has a Hurst in it. Wish you lived in North Carolina so I could meet with you sometime as you are very knowledgeable. Where did you find this information if you don't mind me asking.

 

[pagrunt]

Seems like the Hurst was one of the first things to be put in. An odd note is in my Chevy parts catalog picture section shows Hurst on the stick in the 4 speed shifter brake down. One of the best thing about this forum is that we may not live near each other but was can share the "useless" info (my wifes' words) with each as if we do. I have been collecting GM books, gear head books & random discoverys on A/G bodies since '90. I think this info pushed out most of the stuff I learned in school.

 

[pagrunt]

79 GP 4 speed found what tires QFV was for. P205-70R-14 raised white letter tires.

 

[79 GP 4 speed]

Thank you very much

 

[pagrunt]

Found what the last four RPO's are for. They are all for computer selected suspension parts (I would say the springs.)
6DY-front left computer selected suspension
7BX-front right computer selected suspension
8HJ-rear left computer selected suspension
9HJ-rear right computer selected suspension
I came across this while checking things for my car.