Lexan windows

No negative for me, I don't have to buy a new windshield and all of the rubbers .
SO, One thing you'll hear from regular bracket guys is the lexan will fog so that is a negative IMO. Also, depending on the thickness and speed you'll have to brace the center. After all was said and done on mine there may have been 10 pounds saved. But it took a lot of work, because the placement of the tabs to flush mount with the body. I'd prob use the thicker lexan and mount it in a factory gasket for time. You could even run a back brace from the windshield bar to the area near where a rear-view mirror would be. If done wrong/quickly it looks so bad.