You should buy a schumacher nitro fusion to start out with , the go eighty mile per hour out of the box , so you would just have to get custom made gears , it is already a three speed so making bigger gears should make it
go up in the trible digits, if not u could buy or custom make parts to make the car lighter , get a new body with lots of downforce , you could even buy a new motor with more horse power and higher rpm.

DO YOU KNOW HOW HARD IT IS GOING TO BE TO CONTROL THAT THING?????????????????
THE NITRO FUSION OUT OF THE BOX GOES EIGHTY AND THATS REALLY HARD TO CONTROL , AND HARD TO FIND ENOUGH SPACE TO RUN IT .

if its just for speed try the nitro fusion by schumacher!!!!!!

GOOOOOOOD LUUUUUCK