I believe Grumpy has, but there should be lots of writeups on this around Zookpower.ca or the other Zook forums. The biggest challenges (from what I recall) are that the Trackick PS box's bolt pattern is the opposite of the Sami one (2 bolts up top/1 on the bottom versus 1 up top/2 on the bottom), and routing a belt around the PS pump - there's a unique crank pulley that helps this part. High level stuff that I remember off the top of my head. I collected most of the parts, then sold the Zook and everything else before I did the swap.