Had one of my windshields replaced, all the glass shop wanted was the dimensions. The glass shop actually called GS, and got through to someone, and got the original measurements and maker.
It might be a long shot, but I would give GS a call and see if they have the info you need.
07 TM 40D;ISL 450 Cummins(upgraded). Very happy w/coach
Gnarly toad to scoot around.
Geocaching, hiking, fishing, National Parks, Civil War sites.