Small bolt to big bolt pattern

Near impossible to do without welding, especially on the rear axles. Not enough room for five new lugs, at least if you want it to be strong/safe. Others will have differing opinions. Plus, now you have mongrel brake drums too.
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Actually, it works just fine. I have done it on my 7 1/4 rears so I can mount slicks. But like I said not the best idea.