Possible to make light lens ?

Are there suitable plastic for making your own lens for lights ? I noticed the driver's front turn signal is
cracked. A quick internet search didn't turn up the exact match, clear + orange. Probably possible
to find an used one eventually but I'm not that excited about searching through junkyards.

Are there plastic which can be heat formed & is transparent ? Be a lot easier to just make my own
light lens. These wagons are getting old & it'd be nice to make parts instead of scrounging for them.

They're 20 bucks for a brand new set. How much cheaper do you think you can make them?

There's tons for cheap on ebay
http://www.ebay.com/itm/New-Drivers-Front-Signal-Side-Marker-Light-Lamp-DOT-Buick-Chevy-Oldsmobile-/231118847588?pt=Motors_Car_Truck_Parts_Accessories&fits=Year%3A1995|Model%3ARoadmaster&hash=item35cfc1be64&vxp=mtr

Thanks for the link. Didn't find them when I searched on ebay.