Well, I got the clutch in today and my car is living once again to terrorize neighborhood streets, highways and autocross venues!

As for the disk, the UR disk is MUCH thicker on the material the connects the friction material to the splined hub, and the rivets are much more substantial.

As for differences in driving: Again, kevlar is nice! Engagement is smooth, smoother than a stock clutch, yet holds like begeezus. After having both a sprung and unsprung hub with windowed kevlar, I can only say that sprung hubs just feel sloppy. I didn't notice before how much spring action you can feel in the car, because I've never had anything to compare to it before now :dunno: But there's no harshness between gears when shifting like people like to claim without first hand experience, and overall the car just feels more sure of it's gear shifting and power transfer.

Now the real test is to see if this clutch will hold up to the kinds of stresses I'm sure I'll subject it to. :huh: