That really sucks man, I'm sorry
You should check the forums (renntech and others) about still getting Porsche to help you out with the engine. If it is the cylinder sleeve, that's a manufacturing defect and seriously should be at least helped out regardless of how old the car is. I know if it's still under warranty usually you don't have a lot of trouble, but see if you can find anyone that got help from Porsche with the car out of warranty. Maybe they can give you some tips on who to talk to.
As far as what to do otherwise, I am curious if there is a market for blown engine cars, especially for someone who intends to race it or do a swap. Let us know what you find out.
-David