Used my CorelDRAW program to crop it, increase the contrast & intensity, and blow it up. Might help a bit....
Of course, one of my favorite Blazer options was the "16T5 Chalet Camper Packag" (as it reads on my '77 - or "Camper Conver" on '76s? See
http://blazerchalet.com/rposheet.jpg)