Testors does a similar product (my bottle is several years old) and I've used it for attaching "pop bottle" glass/windshields and my recently aquired used Lola had a sliver of headlight lense missing which it filled very nicely. I used the same stuff (in layers) as headlights on a Strombecker D Jag body and while not ideal it definitely gives a decent alternative to no lenses at all.
Here it is on Testor's site:
http://www.testors.com/product/136938/8 ... ndow_MakerIt appears to be similar to good old Elmer's Glue All and Elmer's may even be an acceptable substitute. Hope this helps.