These are the original drawings from Kolb to construct an upper rear fuselage enclosure of Lexan. Unfortunately, the pictures need to be this large to show details, and enable the text to be read. Sorry...
Page 1. You will need to fabricate two bows of 1/2" X .035 6061-T6 with the same bend and shape as the doors. Also, 4 gussets, two per side, to attach the bows to the fuselage and upper windshield frame. They locate the forward edge of the rear windows.
This next sheet assumes that the fuselage has the old style tapered rear fuselage, instead of the current chopped off rear; so the back edge will need to changed a bit. Also the rear cap. I couldn't find where it said what thickness of Lexan to use for the rear windows - I used the same as for the doors.
Page 2. I used thin rubber weatherstripping glued onto the inside of the Lexan where it over lapped the fabric to keep it from chafing.
Page 3. With the current shorter fuselage, the rear cap will lay against the back side of the rear fuselage verticals.
Page 4, this is the door latch mechanism.