why would he have to pull the glass out?
just roll the window down, pull what's left of the old one out, pull the door cards, insert the new one (you can spray this with silicone or wd-40 to make it easier) and pull it down into the door.
then just cut the corners so it lays flat....
bubba's was WAYYYYY bigger than the courier's, so it's a little tight......but it doesn't rattle or whistle