I've had a truetrac in two superduty's now and it is the best street carrier on earth IMO. Just goes. Hardly ever opens under power.
A word of caution though, I broke some kind of snap ring on my first one, although it never stopped working, and it's still in the truck to this day about a decade later, but.... there was a large broken ring in the bottom of the case on an oilchange after some loud popping when towing.
Point being, when you have a lot of trailer tongue weight, go real easy pulling out if you're turning out onto the road 90 degrees. Tires can't slide and the carrier will try to lock up.
As for the bearings, sometimes it's nice to grab two carrier bearings just for the ease of install without even having to dick with knifing the old ones off the original carrier...
