i put a cr on my boat but i went with merc just for the fact that i wanted the lower units to look the same.I did read some of the threads on se and it scared me a little so i went with merc.

I used a stern drive engineering counter rotating drive on a four winns liberator 241 with 2 350 mags. ran the drive for 4 years and no problems at all. I would definatly buy this drive again if i had a use for one. it was a great improvement on my boat, torque steer was gone, handeling improved 100%.