72 914 track car windshield replacement, glass or polycarbonate Options

[RiceNeck]

This car will not be driven on the street, it will be used on the race track.
During roll cage install my windshield was damaged, so any suggestions from the 914world community would be helplful.
Should I replace with oem type glass or polycarbonate.
If you have installed a polycarbonate windshied in your car what has been your experience? Would you do it again? How about UV and scratches?
What manufacturer or company did you purchase your windshield from?

[RiceNeck]

Thanks for the replies.
There is nothing specific to the front windshield in the series rules that I will participate in.
Here is the only thing pertaining to glass in the rules
"Headlight units, door glass / mechanism, back glass and stock roll bar may be removed"
As far as I know everyone is keeping the windshield, I would like to keep mine installed regardless.
Safelite is checking on availabilty of the windshield.
AutoAtlanta has porsche brand, oem brand, and polycarbonate brand.
I am just trying to decide what will be the best over the long haul.
Also, ease of install, care and maintenance are important.
Here is a picture of my door, and I would like to figure out how to install some type of rail system and get standard type or polycarbonite door glass. That is for later on, the windshield is my main concern over the next few days.