I'm hoping to work on this swap in the winter too.  I'm planning on the 4.2L V8 in my 2003 S.
Where are you located?
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					Originally Posted by alm001  As a former S4 owner, I want to place a vote for you to swap in a 2.7t | 
	
 
As a former S4 owner and 2.7t swapper into a B6 A4, I'd recommend going with the 4.2L V8.  Someone in the UK has already done the 2.7T swap and I don't think the turbos fit in the engine bay of the Boxster, which is why that guy went with a big single turbo.  So if you're going to have to re-do all the turbos or go big single, why not do it with the V8 to begin with?  Plus as good as the 2.7tt sounds, there's nothing like a high revving V8.