Usually the way this is figured is you need at least the diameter of the stud seeing threads. This means that for a 1/2" stud, you want 1/2" seeing threads. With the extra length that the shank lugs will give you, you should be good to go.
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"I think we're gonna need a bigger boat"
'68 RS/SS Camaro, 350ci/400hp, 4 speed, M-21, 18" Boze Wheels
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