Chuck - I sent you a PM
Randy - I used SSTL 8-32x1/2 button head socket drive machine screws (McMaster P/N 92949A194), and SSTL flat washers (McMaster P/N 90107A010). I installed 8-32 internal thread cad plated nutserts into the body (McMaster P/N 98560A541).
The foam is 1/2" wide x 1/16" thick adhesive backed foam rubber from McMaster-Carr. I'll have to look up the part number as I don't have it written down.
Installing the foam can be tricky because it's very thin and will tear if not handled gently. Its very sticky and once placed on the Lexan, its a bitch to get off. You can remove it by rolling your thumb over it like rubber cement. It balls up and comes off. My wife held the roll while I slowly applied it to the windows and light covers. It makes sharp turns very easily.
Hope this helps
Bill D