Screamer-

I know theres some 400 and 500 horsepower gen coupes out there. When you are running that much power through the car, do you have to do any upgrades to the differential, axles, or drive shaft or do the stock parts handle that much hp ok?

El_STiG

Most havent done anything to the drive train other than inforcing the rear diff with that extra bolt thats missing from the factory (pre-pair for lots of vibrations) and replacing the factory flywheel and clutch to a stage 3-4 clutch and replacing the syncros and clutch line. Most of these owneres drag the car or just a Dyno queen.

Red Raspberry

There's some aftermarket axles as some of the OEMs seem to snap off. I guess if you really use your car and it's not a dyno queen then it pays to beef that stuff up.