I got the OEM grizzly from Joe (spmotorsports)a good year 1/2 ago now. I recently pulled out my engine/trans to put in an SVT engine and thought I would take a look at the clutch to see the wear on it. To my suprise it looked hardley touched! And trust me, I drive my car like I stole it so I had more burn outs then I can remember on that clutch. I was going to buy another clutch kit for the svt engine (RAM PowerGrip - $360, only $60 more then the grizzly). Dustyn recommended it. Seems like a good clutch. But I just can't afford it at the moment so I'm just gonna reserface the flywheel (svt's of course) and place the Grizzly back in it. I liked it and I must say I was VERY impressed with how little wear was on the disc.....I guess it's the Kevlar!!
Easiest way I found to get a hold of Joe is to e-mail them an order request, with Part numbers etc from thier site. Joe more likely call you back and leave his Cell #.