Answer
Where to start.. well, first the obvious: you cannot put "an accessories" on anything. you can put an accessory, or accessories! but now to the real issue about your, uh "carrera gt."
most carrera gts have no need for special accessories! however i think you are probably right that your "carrera gt" may have some special needs, so i would recommend:
* a very large rear wing. this should be at least 4" wider than your civ.. er, "carrera gt." at at least a foot above the roofline.
* a large "no phear" sticker for the rear quarter panels! very stylish!
* a type r sticker for the back. a "carrera gt type r," now that
totally rocks!
* carbon fiber look contact paper! buy as much as you can afford and cover as much of the car as you can in it.
* new exhaust tips, the size of which should be large
for a homeless person to live inside on a cold winter night.
you may want to get more extreme over time to really maximize your perforbloke
ce, but this is a nice
starting point.