cant fit 22"s on 68 c10 swb rear hubs

[jserrato714]

Hello peeps, so I came across some 22" 6 lug wheels off of a 2001 yukon. I installed the two fronts and let me tell you..it looks tuff. ( pictures are on there way). I am trying to install the rears but the center wheel hub is about 1/2 inch bigger than the center hub hole on the wheels..Any ideas as to what I need? Can I just grind the rear spindle hub flat? I am on a budget here so replacing the wheels is not an option! Thanks to all....Note: I have researched but cant find nothing on the rears just the fronts.. Thanks 2 all