Here is my Tech Tip How To on installing the Performance Switch on GP's that do not have it installed.
http://www.grandprixforums.net/f73/a...shift-701.html
I hope this helps ya! Also IF you have the GTP DIC, the one that has the Boost Gauge meter graphic on it, you will have the Performance Shift option inside of it. NOT all DICs have this. Only the ones with the Boost Gauge meter on it generally have it. I can not say for the rest.
There are many options on how you may want your PS to work. ie Toggle Switch, Full time mode (grounded on permanently), or finding a used Shifter with the PS button in it. My write up helps you to get the PS working in your car, the way you engage it is upto you.![]()