1. Remove interior trim panel, arm rest and handles.
2. Roll main window glass up high enough to see the bottom edge. You'll have to put the crank on temporarily to do this.
3. Look at the front edge where there's sheet metal attached to the main glass. There's an uplock bolted on to the sheet metal. Remove the uplock.
4. Go to the back edge of the door. Remove rubber grommet. Exposed there is an allen screw. Remove allen screw and fetch rear window uplock from the rear side of the window glass. If you plan to replace the belt line weather strip do the following. Roll window down to expose nylon rollers and clips. Support window then remove clips and pull scissors away from window. Window glass will be loose, rest it at the bottom of the door. Remove screw from rear of door (little phillips screw holds end of belt line weatherstrip). Pry old belt line weatherstrips from door edges. Undo rear channel bolts (rear side of door...two body bolts). Pop off plug at door bottom then remove bolt from bottom of the rear channel. Loosen bolts and allens on the front channel (two allens with locknuts - two bolts with square washers). Slide vent window forward on door 1". Lift main glass out. Lift vent window assembly out.
Okay, the vent window assembly is now out of the car and on the bench. Drill out rivets holding channel onto vent window frame. Work on channel first. Use wooden block to drive molding from channel. Once molding is off you can see and drill out rivets on the molding to release the division bar weather strip. Install new division bar weatherstrip on molding and rivet in place. Slide molding back onto channel.
With the vent window frame separated, remove nut and washer from bottom of vent window. This will relieve spring tension on the window. Note shape and installation of washers before removing. They need to go back on the same way to provide limit stops for the vent window. Once the window is loose, pull it down out of the top pivot and remove it from the vent window frame. Pry the old weatherstrip from the vent window frame and press in the new one. Install the vent window in the vent window frame.
My advice is not to mess with the tip weatherstrip if you have a reasonably good one and do not have the Scott Drake rivet setting tool. If you have the Scott Drake rivet set, then by all means replace the tip weather strip.
Reassemble the door in reverse order of disassembly. Pop rivet channel to vent window frame. Use steel pop rivets.
Alignment. Once the pieces are all loosely assembled in the door, do the following:
Close the door until its near the windshield pillar. Align the front edge of the vent window frame so that it slants with the windshield pillar. You want the vent window to bite into the pillar weatherstrip 0.060" (for new weatherstrip on inside of drip rail). Old weatherstrip, you'll just have to guess but it should be close else you'll get lots of wind noise. The chrome at the bottom of the vent window frame should be exposed 1/2" or so. With this height and slope for the vent window frame. Firm up but do not tighten vent window frame bolts. Note: to get a good angle on the windshield piller you'll have to adjust the allens at the bottom of the channel and on the tab on the vent window frame. Once close, use allen lock nuts to hold things steady.
The rear channel should be in place but the bolts loose to install the main glass. First in is the main glass. It should rest at the bottom of the door until the new beltline weatherstrips are installed. Clip them in carefully without bending them. Install little phillips screw at the back. Pull main glass up and attach scissors with nylon rollers and clips. Note: simply pushing the end of the scissors into the nylon clip causes it to lock on. Note: if you got the vent window channel position correct, the main glass leading edge will also be correct. Make the back channel align to the front channel (same slope). With the channel in place but loose, roll window glass up and down several times. Rear channel will automatically align provided the lower slip nut is not frozen. If the window drags, work to align the rear channel so it does not drag. Note: if the felt (moleskin) in the rear channel is badly worn, the window will drag no matter what. Do the best you can or replace the moleskin in the rear channel. Install the uplocks. Roll the main glass full up - while checking its contact with the roof line weatherstrip. Once you have it aligned, then tighten the uplocks (front and rear uplocks determine the upper angle of the main glass). You may have to iterate these adjustments several times to find the sweet spot.