Allen
I just did the #10 screws in the window track. I did buy "draw latch buckles" from Master Mccar. I was going to glass them in the side front top and buckle them to the windshield side post. But I like to add some sort of window and not sure if they be in the way.
I copied your design for the side mount except I glassed in the L bracket to the side of the pillar. The L bracket is about 1/2" off the side of the car.
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Rear portion is floating. Having driven a few miles it doesn't seem to be a problem of flopping around. I've seen some use "S brackets" coming out of the truck. I don't think I'm going to do it though.
Kinda surprised how much wind still comes through the car. But it does seam FASTER!