I wouldn't recommend this way on a finished car.I just did it,and on mine,if the weatherstripping hadn't already been cracked and split,it would've been directly after.
I was also lucky enough to have my actual window glass come out of the u channel.Now,its not staying put.So,I guess tomorrow Ill try to reclamp it in the u channel to get it to stay put.
I think for the passenger side,Ill try removing the vent window for a little more room.
It was worth a try! Thanks again.