I got my 6.0 installed a couple of weeks ago. To my wifes suprise nothing has gone wrong yet, besides the crank pulley for the whipple comming loose during a tuning session. Allen was trying to prep me for buying a new tranny the way it sounded.

The performance difference is most noticable down low, and it made a HUGE difference.

For anybody thinking about this conversion - DO IT!!! There were zero problems with the swap. The only small snags, and I mean really small, came when hooking up the fule lines and a vacuum fitting on the new intake manifold.

Engine Swap Diary

I did loose 1.5 psi of boost in the swap. I guess the bigger motor just breathes a little better. I'll be searching for some smaller whipple pulleys to play with really soon and then getting some track times.