Clutches can over heat my mates NPC wealded itself to the flywheel he bought a new plate and wacked it in all good...
the JB clutches he uses the cover and everything else is new so i would say they are a pretty much a brand new clutch, mates had a excedy hyper single built by him with a solid center and its great so nice to drive better than the excedy junk i had in mine!
the full monty clutch is a generic rebuild not specifically built for anything if you want a custom clutch you have to ask and get it built to what you want.
the worlds fastest H pattern VL uses a JB clutch and how bloody hard does that thing get launched !!!