this is over at
http://www.pelicanparts.com/techarticles/Boxster_Tech/Disc162/BoxsterTech-162.htm
I've said I'd want Jake to do it because I don't want someone doing a heart transplant on me for the first time. But the problem you have is do you want to do the IMS/clutch and stop there or do you want to fix all the design, materials and just simple wear problems too. I can't see myself stopping at $3-4k...but around $18k ought to do it. Why spend $3k to solve one problem when others could take you down? And then where do you stop...water pump, idler pulleys, AOS, throttle body, and it goes on from there. And why not get a 3.6 while you are there.