Congrats Fred.
I went from the '01 M5 to a '02 M3, (for 5 months until the engine blew), and have now had my 996TT, (non X-50), since May. An awesome car, I drive it as my daily driver, and will do so until the winter months.
As for modifications:
Get Invinca-shield; Stongard; Armourfend etc. ASAP. I have mine covered with Invinca-Shield by
Alan Seligman from Orlando, who did an incredible job. The best money I've spent.
Short shift kit; TechArt from Gert at
www.carnewal.com. Worth the money, easy to install at the transmission side, no need to mess around inside the car. Another option is the Ruf piece which has just been released. Attaches at transmission like the TechArt, (in fact these two pieces look very similar), but has up to a 50% reduction I believe. The Techart goes to 30%. Ruf costs more of course.
Suspension: TechArt adjustable coilover kit. Multiple adjustment for ride height and compression/rebound. hence easy to adjust from 'street' to 'track' set-up. This is very similar to the Bilstein PSS9 kits, but Bilstein do not make their kit yet for the 996TT. Expensive, but you get what you pay for.
FVD also has an adjustable Coilover kit that I'm going to investigate soon.
Clear Euro front turn signal lights: Gert at Carnewal again. Gert is a pleasure to work/deal with. Great prices, service and quick delivery per DHL air.
Wheels/Tyres: Check with Wheel Enhancement. Porsche specialists. The stock GT-2 rim is 12" wide rear, but you may be able to go wider with the correct offset.
Roll Bar/Camera mount: Brey Krause.
Engine mods: Many tuners out there. I'm taking Oak's advice when I go Stage II.
Exhaust: Ruf. (personal preference as all exhausts are; most expensive but great quality and lovely sound imho).
Hope this helps.
Dave Bishop
thebishman
'02 Artic Silver 996TT
P.S. Many thanks to 'Jack in LA' and Oak for great insights/advice.