For dirt track stock car racing I recall all the GM cars were required to run 1/2” studs. Many get converted while the hubs and axles were installed on the car. The biggest thing is to find the appropriate drill size for the stud used, then just drill it out. Then shim it and tighten it up to pull it through. Most of the time a drill size can be found that works, but a reamer can work too if it is a little tight.
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