They will fit great. They may be a little tight on the hub center, but on mine the rust was a little thick.
You can buy lugnuts that are also externally threaded for the fake plastic ones to screw on to for the center caps, but they will be pricey. The '97 ones were metric.
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1971 GMC 2500, 402/TH400 4.10 Daily Driver
Lafayette, CO
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