I put the Perfex on my foreman, the best money spent on it to date. Only had to drill one hole for the rear brace, but it was easy. I took my tires off and put the quad on a atv jack, so I could move it around. Just take your time and pay attention, you will have no problem you can't take care of. I thought it was easy myself. Steering seems lighter also.
It rides like I bought a new quad, totally different ride.
I heard Honda saw how many of these units were sold, and put some of the same design in the 05 and up models suspension to get a better ride. Not sure though, anyone know?