lol, Good aspirations, GTT is turbo im assuming ( sorry not a 34 fan at all)
Interior, You will need to get all of that custom,
Wheels, You choice- No one here really cares for big 18" + chromies if htats what your intending,
Brakes- Stock power you will be fine, Get good pads a synth fluid.
Body kit and spolier, Your choice.
Exhaust, Depending if turbo or not- Either way....Just leave it stock.
Really not the project for a 14yr old, Unless you were born with a silver spoon.
Good luck mate Pm me any questions il see what i can do.