[C10 - C90 Bill]

I just checked a bunch of different '71 and '72 C-50's online and while many were 10-Lug, most were 5-Lug Fronts. Here is an example of one of them:

https://www.tapatalk.com/groups/towc...50-t11507.html

1971 Sales Brochure (click onto picture for larger view):

https://www.ebay.com/itm/1971-Chevro...UAAOSwq0Ve9OKj