I was interpreting this post as "visual mods" of which there are very few for us 04+.
IMO...they have the best body kit available for the 04 plus...I love the hood with the extractors, but this hood isnt available for the 97-03....so it isnt like there are no options.
98 GTP Coupe- 180* T-stat, GMPP Front Sway Bar, Dual Aeroforce Interceptor's, TDC FWI, TDC Taylor 10.4's, ZZP SS Plog, ZZP 3" SS catted DP, ZZP MPS W/3.4, AL104's gapped @.055, 3800Perf. PCM