The spacers come with the studs made onto them. Just go on ebay and search for Mustang spacers. You'll see what I mean. I have spacers on a couple of my cars, one has 1 1/4". If they're put on correctly (and correctly, to me, means that they're tightened up properly, as well as thread lock used on the lug bolts that hold the spacers on so they don't loosen), you should have no problems at all.
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