subaru and window panels

just thinking in the past it was probably a great idea to add a couple of windows into your panel van,now its frowned apon , will the subaru or v6 conversions be following the same lines as cutting windows into a panel van in the future, or is it a easy fix to get them back to original? i have not fitted one or even looked to close at them so i am not sure how much cutting is involved to get one in there .
t2

Anything cut to fit can go back to original with some work. But why would you want to?

as i said , its was a good idea to cut windows into a panel van in the past not so good now, just interested in peoples thoughts