Boy, this looks great.
Just a note, and I don't know if it applies in all cases, but on my Dad's S-10 Extended Cab...that hump/box thing on the back of the cab wall was in the middle and not on the passenger side. Not sure what it is, even - but thought I'd toss it out there.
Again, this is some nice looking work. If you don't mind my asking, how did you extend the cab? I assume two kits? Are there pictures up of that part of the progress?