I wish this advice was in the manual, but in order to bolt the windshield on the driver's side you need to remove the fuse panel. That made it a lot easier. On the passenger side it's more difficult, especially if you have your engine ECU and a windshield wiper motor mounted in this area like I do. And definitely try not to drop washers and nuts in the dark spaces between the body and the frame that you can't see. Anyways, the trick to the passenger side was to put your arm and socket or wrench behind that ECU. Yes you will still have to tighten it from 1 foot away moving one click at a time without being able to see what you are doing and you might even have to lay superman style across the engine like I did, but you can do it. Here it is all tightened down.
I forgot to mention, in order to drill the holes in the side mounts of the windshield, get a step drill bit that looks like this.
It works *way* better than your conventional bits!