Installed today. Pretty unit. Love getting rid of the movement that a bad stock unit has in the carrier bearing (even before it really goes bad, it still has its speed ranges that it oscillates in the carrier). This smoothed out the ride significantly. There is a bit more feedback felt due to the billet coupler, but not much.
I had to do a few things to make it fit with the UUC shifter, including adding about 3/16" of shim washers under the transmission brace to lower the rear of the transmission a bit, and also had to grind the edges off the bottom of the UUC to help the 3rd/4th gear positions clear the balancing weight which sits directly under the shifter. Plenty of exhaust clearance now with this 3.5" unit.