Hy CAJUN CRAW FISH, I am no F@#d expert but I thought they used Budd wheels (stud pilot) as did Dodge. Chevrolet and some GMC used Kelsey wheels (hub pilot) or Motor wheels (hub pilot). The later fifties heavier Chevs and GMCs used Budd wheels. I believe Studebaker used Motor wheels. Wheels of different types with the same bolt pattern usually don't have the same center hole dimension, I believe to alert the installer that something is amiss. If the wheels have mounting holes that are much larger than the studs on which they mount and those holes are chamfered on each side then they are a stud piloted wheel, most likely Budd, hope that helps.
