Over the course of the last week my Dad and I installed the rear window. There is some trimming to do first, which we did with a jig saw and a diamond blade. This was a good setup as it was accurate, square and it melted nicely through the material. With the notes cut, then filed and scraped to final dimensions, the process of drilling the canopy starts. With one person holding a black of wood to back up the Perspex, and the other one drilling, we were able to drill all of the holes without trouble. The forward edge is a little different, as the drill needs to be lined up and square to drill through into the roll bar. The holes are the final sized and tapped. My dad did an excellent job and the finished window fits perfectly!