Celica Forums General Discussion Exterior flywheel

I am getting a new clutch pretty soon and i wanted to know if there was any downfalls to getting an aftermarket flywheel. I was thinking about JDM TRD Clutch/ Fidanza flywheel combo. What do you guys think? I talked to someone and they say that aftermarket flywheels make the clutch untable. Any info would be greatly appreciated.

revived cause i want to know the answer.