yeah, its supercharged. i bought it 2 months ago and im going to buy a new car and the dealers wont give me crap for this car.
1996 pontiac bonneville ssei
154k
new tires
new front pads and i machined down the rotors
new balljoints (not installed)
dex 6 tranny fluid (replaced it when i got the car at 150k)
thrush cherry bomb
BAD:
the traction/abs light is on due to the front right hub wiring broke
air bag light is on. i think its a loose wire.
front driver seat doesnt move. corrroded wiring? (havent looked into it)
yeah they do have good aftermarked support. if you do a 3.4" pulley with a log header, 3"dp, a 2.5":exhaust 105# springs and 1.9 ratio rockers you can get about 300 whp. the car stock is about 240 whp. go to zzperformance.com and click on grand prix. tons of goodies on there
Depending on how big you went you could lose anywhere from 5-40HP. If it were me I would likely put a smaller one on. A smaller one could really pick up some power.
And yes, you can mod these pretty good. Got a friend with one that is highly modded and it moved pretty good for a large car. Plenty comfy too. The above site can help if you wish to get it and mod it, or even to fix things.