This unit is a solid hub version of the stage 3. The hub is solid 8-rivet and the assembly is heat treated for strength and durability. It is available in a 3, 4 or 6 puck configuration. Use the 3 puck for the lightest option or the 6 puck for the smoothest engagement. The 4 puck is a good compromise for both. Street drivable in 6 puck configuration, but not street friendly due to the rigid hub. Best for drag racing, road racing, pulling, rallye and drift.
I've had this clutch in my 2J swap and drifted for the past 3 years with it at close to 500WHP. The clutch slipped once about 1.5 years ago from getting too hot due to my own error. But it's held up great.