I am not aware of any aftermarket ground-effects kits for the Pontiac Grand Prix. However, all Pontiac Grand Prix GT and GTPs are equipped with great-looking factory ground-effects. It would be possible to upgrade the appearance of a Grand Prix SE using GT/GTP ground-effects. The SE would look good with just the GT side ground-effects, but it would be possible to do a GT/GTP exterior conversion to an SE by also replacing the front/rear fascia, and appropriate mounting frames/brackets if necessary. These parts can be found for the best prices at auto salvage yards. They can also be purchased brand new from any GM dealership.

This is the factory-style rear-wing found on the Grand Prix GT and GTP. This is a great addition to your Grand Prix if you own an SE or somehow managed to get a GT/GTP without a rear wing. Several companies manufacture/distribute these factory clone wings. They are not available with a brake light. Erebuni Corporation, Style 587 Wings West , Part No. 591278 WingTech Aerodynamic Spoilers, Part No. WT-58 California Dream, Model 160N

Universal Wings
If you don't care for any of the above rear wings, you may want to choose a Universal one.