UUC installed mine a couple weeks ago; we are awaiting a report from a poster here who has installed the SSK in other bimmers, but should have his X5 version soon. As best I recall, he puthis expected install time at less than that. You can look at install tips for other bimmer models on the UUC website and, especially, the good E36 tech guidance for the install at Pelican Parts. I expect it really depends on your mechanical skills and flexibility [if you don't have access to a lift] from a creeper - and having small, flexible hands to do the one 'blind' clip fit. That said, if you've never done this before, it could take several hours. Personally, I always underestimate how much time it actually takes me to do anything on a car .....

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2006 X5 3.0 6-spd w/Evo UUC ssk
sport/premium pkgs
born Valentine's Day, 2006.