There is a guy on ebay selling 1/2 inch smoked acrylic sheets. The ad says to ask him if you want custom sizes. I asked about a 24 x 24 piece for the forward hatch on my 9.2A and he came back at $115. I also asked about thinner stuff for the fixed portlights. Just in case anyone else is interested. I haven't decided what to do, but have other higher priority projects at the moment.
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=110404396067&ssPageName=STRK:MEWAX:IT
Dear 64dartgt,
24 x 24 x 1/2" scratch resistant tinted acrylic
$115.00
I have this color in 1/8" and 3/16" but not scratch resistant
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=110404396067&ssPageName=STRK:MEWAX:IT
Dear 64dartgt,
24 x 24 x 1/2" scratch resistant tinted acrylic
$115.00
I have this color in 1/8" and 3/16" but not scratch resistant