We have to run something up front. Some run Lexan but the stock window is free.
We used a piano hinge so we can adjust it some. However we are somewhat limited. For faster tracks we'll use a shorter piece of plastic.
Carbon fiber...not even sure what they would charge for that. Plywood is $3 sq foot and the Lexan is $5 a sq foot. I talked things over with the team and the car w/ spoiler and splitter is going to be around $465. That gives us some wiggle room for the rear window next race. If need be we can use the stock PS cooler and save $20 more.