I am very interested in this swap kit.  I like what I hear on most aspects.... I would find my own engine and most likely rebuild it myself thus keeping the project factor high and the cost (not including my time- see previous) low.  Around $3700 maybe??
But one thing I have wondered about is the availability of parts for these engines which in most cases are already 12+ years old.  What happens in another 10 years?  Am I worrying over nothing?
A turbo under the deck would be nice.....
Nat 
Seattle