it took me pretty much all day, but i was doing several other projects at the same time. if i were only doing this, it would only have taken about 3 hours or so, tops.
i had a coffee break in the morning, lunch break shortly after (i was up early that day), helped my friend with his brakes, rotors, calipers, helped another friend work on his jeep figuring out electrical gremlins, etc...
but it's really pretty straight forward. just take your time, and feel for each screw you have to remove.
-shaeff
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My heatercore replacement writeup with pics.
-'94 Toyota 4X4, 22re, 31X10.5 BFG M/T's, 5 speed, MC rear bumper. (Winter DD/ off road fun)
-'95 BMW M3, modded/suspension, sticky rubber, back road monster (Summer DD)
-86.5 Toyota Supra, too much to list. (Never-ending project)