i have both the a 98 gp gt and a 98gp gtp they r both black and i love them both. I did just about all mods you can do to the gt except a cam.I have the er ratio rockers which some think are the best for the gt.Also have the hv3, 3" downpipe, hv throttlebody, custom tuned many times,even bought the hp tuner suite ect.ect.ect. i got the gt first and dumped a ton of loot into it.Then i stumbled upon the gtp for an awsome price and when i drove it, it was damn near as fast if not faster than my gt and it was bone stock. I never lined them up to see which was faster but the gtp definitly seems faster. my point here is if your gonna buy all those bolt ons and other mods save your money and buy a new or find a used top swap kit in the end you will be very happy or u will wished u didnt waste the money bc you will be removing most of those mods when u do buy the top swap..i say that bc its very addictive once you start modding you will probably never stop lol......as i am currently dumping tons of loot into my gtp..lol
but i will say all the mods i did i saw a big diff from stock....
Just my .02
