I used the CPP version, got a box from a 74 Chevy, 2wd. Install was ok, don't really like the way I had to install the Borgeson joints to get everything to line up. Truck steers ok, there is some bump steer (minor) but that could be caused by the 2 inch lift kit. Most trucks are lowered, so the relationship of pitman arm to steering arm is different than mine.
My biggest complaint about the set up is the cheapo rod ends that are used on the pitman arm to connect it to the steering arm. They wore out FAST! Couple of hundred miles! Took them to Napa and crossed the part # over, 1947 Mercury! Still a good number, bought a set from Napa. 3,000 miles and going strong.
I also upgraded the tie rod ends on the drag link to a more modern design. (Safety reasons)
I like the look of the Toyota box install. Seem much cleaner.
My .02
