Marrying the Malibu passenger rear window frame to the driver's side S10 door went much faster (3 days). Now I have both frames mounted and have test-fit the glass with the weatherstripping and the power window motors. Both windows function properly with no scrapes or snags, although they don't go down as far as I'd like. Oh well. I have hung the doors back on the cab and checked the alignment of the tops. Luckily, they're dead-on level. Now I can start fitting the Malibu roof/door frames and fabricating the windshield frame.
