if a nsx was tuned right i think it can do 240+mph. Depending on how the weather is. Let say that the tuned nsx is lightened to -2200lbs. and the motor is making in about 600HP then the car would easily do 240+mph. It can be done that is one project i'm going to do in the future. I will hopefully import the nsx type-r or type-s zero then get all the panels and doors to be carbon fiber. After that i will make the window out of fiberglass. then remove intorier and exchange it with lighter stuff. Then buy engine stuff that will make the car lighter and give more horse and torque at the same time. then i want might add the twin turbo which might surpass the 600HP. But no aftermarker body parts just carbon fiber stock body panels custom made. I will hopefully test it in the offical speed test things in the desert or flat plains area. Not sure. Also hoping to biuld my own concept car.