Doctor Diff's 8 3/4" Helical Gear Sure-Grip ("Sure-Trac") LSD

I've actually talked to Cass about this differential, but that was way back before it even came out. Maybe a year or two ago. It was still in the development phase.

I originally was inquiring about the Sure-Grip and the Tru-Trac. He had mentioned something regarding some issues with the Tru-Trac, which is what inspired him to come out with something similar, but better. So I waited. Besides, other things came up which ate up "diff funds". Now I'm revisiting it again.

I've bought brake stuff from Doctor Diff and I'll tell you he has AWESOME customer service. I wouldn't hesitate to spend money with him again. But...I also tend to shy away from being and early adopter, so that's why I wondered if anyone has run this diff and what their thoughts were about it. Aside from the two extra helical gears for strength, not having to run friction modifier is a plus too!