Blah! That's a bummer. I have a downpipe coming next week and so badly want to flash stage 2. My clutch was brand new on the car at 37K miles and I'm currently at 75K. I'm tempted to just run southbend stage 3 disc until I need to replace the clutch at @140K
I haven't slipped at all on stage 1 and I run her hard. The car is my daily and I don't have the money or the time to replace the clutch if/when it goes. I'd rather prepare for the next upgrades and have the vehicle ready for it.
I doubt the SB S3 clutch will last that long. Once they get hot and slip it's all over - they'll slip at stock power levels. Plus they tear up the flywheel so you're guaranteed to need a FW once it's done. With the stock organic disk you may not need a new FW, even at 75k.
Save for a while and tune when you have the $$$ for a clutch. Buy the tune and wait for that stocker to slip. Replace clutch.
I didn't wait. My clutch started slipping about 3k miles after the stage 1 flash and I had to wait about ~12k miles without WOT (or in the stock mode) before I had the cash to do the clutch. It sucked.
That said, since I replaced my stock PP and disk with the RSR @45k miles I've gone stage 2 at 75k, k04 at 85k and am now at over 96k. This thing is a champ.