GW, I've been researching this on and off for about 8 years. I have a 61 C20 myself. performanceonline.com recently added C20 kits but you have to choose either 5 lug or 6 lug; they don't make 8. So why I haven't made a move yet is that I can't decide on 1) install 6 lug kit and use 6-8 lug conversion spacer (have yet to confirm that will work), 2) Install 6 lug kit and get 6 lug wheels in front, leaving 8 lug in back 3) install kit and swap rear ends (by now you know "swapping" a 60-62 rear end is a major project) with one with same lug pattern.
I like my 8 lug wheels, and I have some spiffy wheel covers from a 90-something 3/4 ton suburban that would have to go unless I choose option 1. I hope you get comments from someone who's already figured it out. So far it seems like C20's have had a low survival rate do to being "farm" or "work" trucks from the get-go.
Ray
Virginia Beach
'61 C20
