Here is link to a post on this Forum where the car had exactly the swap we are discussing.So it is doable -the question is:
1. how to deal with the electronics?
2. and is a Tiptonic O.K. for a manual recipient ?
If someone covered this in all the vital details, plese tell me.
http://986forum.com/forums/boxsters-sale-wanted/47049-2000-boxster-996-3-4-engine-swap-located-souther-california-77k-orig-miles.html