If you are not racing, some of this is irrelevant. I just wanted to clarify one point and make a suggestion or two with regards to cooling holes.

1st: The legal diameter for the hole in the front windshield is 50mm not 2". Unfortuneately 2" is a little larger than 50mm.

2nd: You would be better off removing the entire back window rather than cutting a few large holes in it. This give better airflow.

3rd: As somebody else stated, you can remove both "front seat" side windows, but you can't cut the "back seat" side windows.

Also the roof glow plug access hole can only be 30mm.

I wish I could find some metric hole saws... Anybody know where to get some?