Searching the archives at NewellClassic.com came up with this response for your question:
05-02-2002, 11:38 AM
#2
TechTalk
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Feb 2000
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304
The windshields for the 1981 through 1989 Newells (coaches with the eyebrow over the windshield) are a standard Chevrolet Astro 95 truck windshield. They are relatively inexpensive. On the 102 inch wide body models, built starting in 1986, a 6" wide center section is an "inside cut" from a complete left or right windshield.
Hopefully this helps.