Had you had the issue some time ago you had a better chance of getting it repaired under warranty. But, your 3/36 bumper to bumper is done and now you're on the 5/60 drivetrain. Recently they've been turning down modded cars for the TSB (as Jiggy said...go look for the info at SVTperformance or teamshelby.com. there is a TON of it). The last few I've seen they're calling it a 12 mo wear and tear item.
The truth is there were two issues. One was that people didn't know how to drive this kind of clutch (no offense, as I don't have any idea of how you drive) and pussied it around and killed them. Theyre TOUGH. I've got probably 200 passes, 20 dyno sessions and 23,000 of stop and go driving and it's fine.
The other issue was that on early cars (you'll find the build dates on the threads) there was rust developing on the input shafts. They weren't lubed properly at Tremec.
Best of luck to you. I HIGHLY suggest you read all you can before even considering seeing a dealer. Then, find a performance oriented dealer. And, revert your car to stock. If you're pullied, Metco makes a 3" and you MAY be able to tell them it's "decorative"
If you have the VMP "stock look" 2.65", you're golden because the normal SVT tech will never notice it. But, stock airbox and tune is a must. No, they can't tell you've had it tuned...that's BS that people thought at one time.
Don't show up with a set of drag radials and a bunch of rubber in the wheelwells.
bj