Its an option I explored, even got specs on the flywheel, I figured with the amount of steel you'd be able to shave before you ruin it is not worth the gain....not worth it..get the after market if possible,..don't look into the counterweights either, that is also another bad idea I thought of earlier on.
Maddog-so the oneway from a 04-05 will fit a 01-03, then you can get the lighter flywheel that'll fit on the 04-05 oneway?