"You might want to drive a 3.4 powered boxster if possible before you decide on the swap. "
If you have not already done so, I would also do some messing around with a car with the 3.4 engine. The only 3.4 L I have driven is the 2007 S Boxster with 295 hp 3.4 L which, from what I understand, has a milder state of tune than some of the other 3.4L transplants.
I was underwhelmed. I guess in my mind I had built up this notion of there being a huge increase in performance over my 2000 base, I was somewhat disappointed. Granted it was faster, and had better low-end torque, but I was still suprised it was not what I expected. Dont get me wronge, I would take one in a heartbeat, but still....
Ed