hey, don't be dissing Canadian GMC's, they are
not Chevs with GMC grilles, they have Chev engines but the rest is all GMC with same the differences in detail

those clipless wheels are the 60's 70's ones, and the one you have with clips looks to be a 55-60 style, with only 3 clips, earlier ones have 6 .... you'll be searching for awhile to find ones with clips, never mind trading, if you can find some of the 60's wheels that still have the holes where the clips go, you can get the clips from vendors
Bill