There does not seem to be a kit available to change to a one piece window on the AD vent window doors. You can change the door to an earlier model but the door handle will be the level type not the pushbutton. There are differences inside the door as well. The front window channel would have to be relocated if you wanted to keep the original doors. Take a look in there and you will see there is not alot of room to work with. I plan to keep my vent windows at least for now.