It seems that most people are going the other way, removing the vent windows and going with full glass. It can be done but as was noted above it would be a lot easier putting in later doors.
I had a pair of doors from a 53 for sale for a long time and everyone wanted doors without the vents.


1949 Chevy 1/2-Ton
"Sedgewick"
In the Gallery
1989 Caprice