What exactly are the differences between the two?

The GTX was not a factory option it was an SLP after market add on package and there were different levels ,as a side note you could get a GTX package on a GT .Chico.

i think that the GTX was a factory option for a limited time. It was only after it was discontinued that SLP started making the conversion kits. I will find the link

The SLP Grand Prix GTX will feature the same twin-NACA Ram Air hood design as appeared on the 300 Grand Prix GPX show car.

http://www.grandprix.net/limited/gtx_article.html

That's not for the GTX.

MPD made the F.1, which is far rarer. IIRC, there are only six.

That's their fender flare kit made to copy the GPX, not the GTX. The GPX was a GP prototype.

Edit: GTX was always through SLP. And yes, the GTX conversion was available for the GT too. When it comes down to it, GTX is mostly just an appearance thing.

Thanks guys Ive been looking and i found a 2000 GTX and was wondering. You cleared it up for me thanks

yeah the GTX was basically a GTP with lik different rims and visual effects lik exhaust tips....

All it was is exterior cues (hood, spoiler, rims, exhaust tips) and the SLP RamAir intake.

Didn't SLP also drop in a 3.5" pulley?

They did. Was warrantied by them, too.

gosh i wish i could have one of those 300 GPX i love the rims on it

over priced flares. that silver n blue gp is sweet lookin, not over done.

Arcxnus has been doing some reading.

The GTX was a modified Grand Prix that had the only "factory authorized" modifications that could be made to the Grand Prix.

There was a base GTX model that came with the SLP Hood, 3.5" Pulley(if applicable), SLP Air Box, and badges. From there you could add anything from rims to racing stripes.

I would own a GTX, but the 2 salesmen I dealt with didn't know what I was talking about when I asked about it.... I figured it was an East Coast thing and bought my GTP. 2 weeks later I went to the dealer for my free oil change and was talking to another salesman. I told him what I was really wanting was the GTX, but noone seemed to know anything about it..... He walked to a computer and in less than a minute had all the information I was requesting 2 weeks earlier..... Oh well... I saved several thousands of dollars because the base GTX was something like $3500 extra.... Not worth the money for sure, but I still wish I had the GTX.

I found out that the GTX also came from the factory with 300 hp. The one I found is a 200 and has 61,000 on it And there asking 10,000 For anyone know if its worth it

No it didn't.