We built our own as well about 15 years ago using plans and components from TIP (which is now TP Tools, apparently). use clear film on the inside of the lexan or plexi window and change it out as it gets abraded/foggy. It's a nice simple project. -Rob
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1969 Camaro/ Tom Nelson TT 434 / Wayne Due C5 / DSE QLink / and a bunch of other stuff...