Daggar said:
Should last any longer then a stock, except you can change out the surface when it gets too low which you can't do on a stocker.
No advantage other then you know it will not fly apart on you, if you need to buy one go SFI. It is more important that you have the SFI bell then the flywheel, I have seen stock cars blow clutches and destroy the stock bell and anything in it's way.