Replacement for rear hatch glass

I don’t want glass to go back into the hatch of my 1990 Integra race car, anyone know where to go for Lexan or Polycarbonate?

i got mine from great lakes plastic on broadway. they have any thickness you want. i just went 1/8" for the back window…but there is 2 braces to prevent it from bowing in

Cool. What material does anyone recommend for the rear window of a race car?

Long overdue update for anyone looking in the future.

Bought large Lexan (polycarbonate) sheets from Home Depot, cut with a Dremel tool to shape using a cardboard template, drill holes through Lexan into hatch about every 8", rivet into place. Most contours can be made without heating the Lexan, this stuff is easy to work with but scratches easily.

Silicone around the edges to make it fairly water tight.