Would a wash have been that much trouble? https://www.ebay.com/itm/1974-Chevr...au-/132411873154?_trksid=p2141725.m3641.l6368
I agree about 1/2 dirt 1/2 faded paint. Wow it has the Gauge package with a Tach! That can't be a very common option on any Monte of the era.