GTS is the ticket, so I bought a TT instead of a Gen 4
The Gen 2 and Gen 3s can easily be modified to be #1. Toss a blower on a Gen 2 and it outpowers everything. Gen 4, not so much.
Can't mod a gen 4 without the mega bucks PCM first.
I added the 40mm rear calipers to my 99 TT GTS, but added Roe Racing 14" brakes to the front of my 2001 GTS (which has ABS and 44mm rear calipers).
I added the Archer Anti-toe brackets and poly sway bar bushings to my GTS in an afternoon and now it handles with the Gen 4s. I upgraded the stereo to a Bluetooth which didn't change the sound volume of quality, but upgrading the speakers made the stereo AWESOME. The floor and door panels vibrate at half volume!
My GTS have rear exhaust which mellows out the tone. With headers, cat delete and Corsa track exh this car always sounds best at any car show. It also puts on the best appearing performance show to be seen.
I ported the Gen 2 heads so the performance n/a would outperform the Gen 3 easily, but I added a Roe blower and get many fastest and if there's race cars in the competition I usually get a second place.
Comparison Halfmile times at SSCC last May; Stock 2001 GTS went 136mph, stock 2009 ACR went 135mph and my Roe GTS went 148mph. I won fastest in the Halfmile.
My TT GTS is a 1500whp car and easily runs over 200mph on the street tune.
I ran Chris Marshall/Marv's joke of an autoX course in 3 Gen 4s @ 22.02sec. Then I drove a 2001 ACR through the course and ran exactly the same time 22.02sec.
GTS 520whp, Gen 3 445whp and Gen 4 making 540whp I had expected to love the Gen 4 but now I'm waiting and may go to a Gen 5 in a few years - when the massive hp excitement wears off and I set a record or two for the Vipers with it.
215mph on pumpgas in about .8 miles TT . 181mph Roe blown GTS mile.