if you go to this website and insert any GM VIN it will give you all the RPO's that were installed on the vehicle. In addition, the number of cars of the same model that have the same RPO's plus a list of all the RPO's available that year for the vehicle. The only drawback is that it will only allow two searches per day before prompting you to pay the cost of the program.

http://www.compnine.com/vid.php


If you go to the home page, there is more stuff you can find out:

http://www.compnine.com/

Enjoy

 

they dont have my 86 ss