Extended cab question

[CG]

Ive seen a lot of the use of burbs to make an (large) extended cab. Ive seen truck cabs extended several ways. Sometimes its extended but the curve of the side window is still there leaving a sort of triangle of metal between the two side glasses. Ive also seen the whole extended part filled with no window, or sometimes a pop out window like on a van.

Has any one built one out of a truck cab by using the upper rear corner drivers door, and the upper front corner passenger of a burbs window frames using the area I have circled. Cutting off the front just past (or before depending on how you look at things) the wing window on the truck glass. Obviously going to need two cabs to pull it off.

Then fill in the door seams and door handles. Make the rain gutter one continuous flow across the top of the windows and down the rear.

Extra room without having to make extra doors. Rear windows dont have to roll down. I think it would flow really nicely.

I used a burb in the pic only to show which parts I was talking about.

One of my local truck buddies likes the idea of the extended part filled and a van type pop out window installed. I think we have at least two board trucks built that way.