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M –23
Lincoln, Nebraska
United States


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1999 Pontiac Grand Prix GTP (Monica)

Last updated Jan 21, 2014  

Photo of a 1999 Pontiac Grand Prix GTP (Monica)


Bought the car in March 2013, with 255k on it. Still running strong.
She's well taken care of, washed every friday and completely detailed at least once a month. Not a garage queen either, she gets her workouts in.
When I first bought the car, I wasn't sure how long I was going to keep it. As I started driving it daily, the supercharged 3800 was tons of fun, and still gives good gas mileage. I began to mod the engine, starting with a cold air intake. That made the supercharger whine louder, and that got me really hooked onto this car. Next was some appearance work, painting the rims, spoiler, and some trim pieces black. I didn't get much else done before I had to go to AIT for a couple months. But when I came back, I had enough money to get a smaller supercharger pulley and some other upgrades. After spending a day installing the upgrades, the results were awesome. the 0-60 dropped from 6.3 to about 5.2 (with no practice launching the new setup, one passenger, 93 octane fuel). I plan on keeping the car for a while now, and will continue to upgrade it as I can.


L67 3800 Series II Supercharged.
~265hp and ~320tq.
0-60 5.2 seconds
20mpg in city, 28+ on highway

Factory Options

L67 3.8L Supercharged V6
4 Speed auto trans
Traction control, performance shift
Tan leather interior
Power sunroof, seats, steering wheel controls
Heads up display
5 spoke Torque Star rims


3.3" Supercharger pulley, performance wires, colder spark plugs, 180* tstat, PCM tune, TOG headers, poly motor mounts, cold air intake, resonator delete, Flowmaster mufflers

Painted front chin spoiler, wheels, spoiler, and rear valance black. Aluminum exhaust tips. Painted interior dash and center console white. Tinted tail lights, corner markers

Pioneer head unit with full Kicker speakers; two 5.25" speakers in the front, two 6x9"s in the rear deck, single 12" sub. USB ports added next to heated seat switch.

Photo Albums and Videos 1 – 2 of 3

Cover photo of Mods album
Photos: 10
Cover photo of Monica album
Photos: 11

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