A race car is a race car. Honestly, I've raced Miatas, BMWs, Ford Focuses, Dodge Neons, tube-frame formula cars, Porsches, etc. All that matters is being competitive in your class. Also, street cars are pathetic compared to race cars. For track duty, I'd take a Spec Miata over a 911 any day. On spirited drive in the mountains? Different story.
Yeah, I'm allowed modifications based on a points system. I could do coilover sleeves/springs, shocks, swaybars, pull probably 200-300lbs out and then put in a cage and lead ballast to lower the center of gravity, racing brake pads and fluid are points free, as is drop in filter, and GPS data acquisition and telemetry equipment. The fattest Hoosier R6s or Khumo 710s I could stuff in the wheel wells, and some stupid-light wheels, of course. Even still, I'd have a few points left to spend on other modifications. What would you recommend? What are the car's weak points?
It'd just be awesome to not need a support vehicle (throw all the tools tires and spares in the cavernous rear).
What breaks in the clutch? Is a stronger aftermarket piece available (that's a points-free modification). It seems the aftermarket is pretty thin on suspension options. Also, what is a torsion bar?