"The diff is nice and smooth though. And everything fits perfect."
"I was surprised at how free the diff feels and it does not slip. I think I can loosen the diff screw even more, and the diff still will not slip. It is very good."
"The diff weight might have slowed acceleration just a hair/barely noticable, but it has smoothed out the throttle a lot."
MaxConcept hardened steel diff on JimmyMac BD5
You may check out this LINK for the review of JimmyMac on the MaxConcept hardened steel diff outdrives.