Ron,
I understand the "legal" reasons for wanting to stay with glass, I had a windshield broken last year and went through the same issue.
Here's my post/ thread from last year on the subject
It was a nice morning until.......
There is also a post that I provided with "How To Install" (search windshield)
Basically, here's is what I found
Glass windshield replacements are about $100 - $200
Shipping is about $100
Lexan w/scratch resistent coating is $125 (locally available)
Lexan is 270 times stronger than glass
The best reason that I could find that Lexan is not DOT is that it can scatch ( even the scratch resistent coating) which could inhibit vision in severe cases such as running the wipers on a dirty windshield. Another reason may be that nobody has gone through the DOT filing process which may be required for each windshield version.
I have had my lexan windshield in for a year and have had no problems. I clean it with a spray cleaner by "No Touch" and have no scratches in 5500 miles.
Good Luck,
Mike 'Monster"