From what I recall ...
The trac/kick *front* *gears* can be used in samurai housings. (not the trac/kick third member, just the front R/P). (I believe this applies to both sami front and rear). So you need 2 front track/kick R/P sets, and install them into the sami carriers.
The trac/kick rear third and axel housing can be used to make a hybrid rear end. Essentially you're welding the sami axel tubes to a kick/trac diff housing and using the kick/trac rear third (which is drilled to bolt to the sami driveline).
TrailTough has a "package" that looks hard to beat. You get a sami front end setup with trac/kick R/P and the hybrid rear (and third) setup too. Considering the work to make the hybrid rear, the sourcing of the misc parts, the "setup"of the gears ... TT looks cheap.