If you can allocate that much time to it, by all means, do so.
If you encountered NO snags (broken vacuum hose, stripped bolts, snapped bolt, drop something in to the heads, etc) then you can remove and replace the UIM/LIM and intake in 30 minutes out (less if experienced) and 45-1hour in..
The longest part is cleaning, and will take a minimum of 3 hours, and by all means if you can allocate an overnight SOAK in berryman's, etc, then GO FOR IT!!! make it easy on yourself.
Either way.. a perfect run, look at about 6 hours for inexperienced first-timers.
Just don't overtighten the UIM bolts.. the specs are in IN/lbs.
Ray
