Stage 1 Performance Package - $279.99

* K&N drop in air filter
* ZZP 1.0 pcm
* 3.5” Modular pulley system ('04+ Grand Prix only comes without a pulley)
* Ubend delete with o2 bung and rear gasket ('04+ Grand Prix only comes without a ubend delete)
* Autolite 104 spark plugs (set of 6)
* 180* thermostat and gasket

'04+ Grand Prixs' are more prone to "Knock Retard", so they do not come with a smaller supercharger pulley, and they do not have a ubend so a ubend delete is not needed.

All packages require 92+ octane gasoline. If not available, please contact us so we can adjust the pulley size specifically for your car.

This kit will give you about 25hp.

Stage 2 Performance Package - $604.73
* Wizaired CAI with 4" K&N filter
* ZZP 1.0 pcm
* 3.4” Modular pulley system ('04+ Grand Prix comes with a 3.6" pulley)
* Smaller supercharger belt for 3.4" pulley
* ZZP 3” bolt in mild steel cat'd downpipe (bolts up to stock or 2.5” catback) with gaskets
* Autolite 104 spark plugs (set of 6)
* 180* thermostat and gasket

'04+ Grand Prixs' are more prone to "Knock Retard", so they come with a larger pulley to keep it safe. All packages require 92+ octane gasoline. If not available, please contact us so we can adjust the pulley size specifically for your car.

This kit will give you about 40 HP.

Originally posted by HercMan:
The kicker in those packages is the MPS. $150 for the hub and a pulley.

If you don't need the MPS and will be happy with a 3.5 or 3.4 pulley you can get much cheaper on your own kit.

Look at the jump in price when you add in the wizair and DP.

On a side note
You still need a pulley puller to remove the stock pulley and you'll probably need new plug wires because chances are you'll break one or two removing the ones that are on the car now.