I went with the UCC Lightweight Flywheel for '92-'99 E36 3-series, M3, Z3 & E34 525i - 8.5lbs - M5 sprung-hub clutch $974
Went this route as we will be adding a S/C to the motor so didn't want to go back and replace Clutch/flywheel for the more Hp...
Nice thing about the Lightweight Flywheel is that it can be rebuilt as well...
http://store.uucmotorwerks.com/light...utch-p194.aspx