Harley's windows look great. Not as great as Dave's trimmer, but great nonetheless.
If you're simply looking to replace the ports as they were originally installed, though, I recommend a high quality plexiglass (acrylic). I know that many people use lexan, and I have in the past, but it has some limitations.
The biggest is that lexan scratches very, very easily. It is stronger than acrylic, but is more susceptible to scratching. Also, it's about 4x the cost and is more difficult to cut than acrylic. Another challenge, at least here locally, is that it's difficult to find a retailer that will sell it in a size other than a full sheet.
Acrylic's biggest limitation is that it is prone to yellowing. However, newer, high-quality acrylics have all but eliminated that issue. It's also affordable - I replaced my ports for about $20. Finally, it's very workable - it cut easily, quickly and precisely with a quality jigsaw blade.
Auto safety glass is also a reasonable option - it wont yellow or scratch - but it is a bit more expensive, particularly given that you will generally have to pay to have a pro cut the windows. I think I was quoted about $80 for all four windows by the same guy that did them for Zephyr.
I have a write-up at the link below detailing my process of replacing the ports on Rambunctious:
http://www.rambunctiousracing.com/portlights.html![[Linked Image from rambunctiousracing.com]](http://www.rambunctiousracing.com/images/looking_out_new_port_2.jpg)