C4 is correct on saying the Ultimates come completely assembled to the dealer. My Ultimate leaks very slightly in a very hard downpour. I'm talking drops of water. on mine its coming in at the passenger door seal at the front bottom of the window area. not a big deal for me because its garaged 99% of the time. also because of the tight seal on the ultimates, you have to almost slam the door when the windows are up so it latches 100%. if not it will not completely latch and will leak. overall I'm very satisfied with mine.