I'll take a shot. You need a set of wheel adapters, 4 to 4.5. You knock the 4.5 studs out and bolt the adapter to the axle shaft. Measure your new stud with a micrometer, test drill another peice of steel and test the fit in the metal. You should have to drive them, but not enough to remove the spines on the stud. Then using a drill press, center on each hole where you knocked the studs out and drill all before removing the adapter. Knock the old studs out of the axle, knock the new ones in. The wheel adapter gives you the drill pattern and if you take your time and go slow you can do a real good job. I pick up adapters at swap meets, only use them one time per drill and measure twice. The front drums on my cuda where done that way and I have never had any trouble. If you do front drums you have to GRIND the stud off from the wheel side to leave the crimp where the factory presses them together. If you knock those studs out, you have 2 parts, hub and drum, Not Good. Hope this helps. Although if you want to give Moser your money, I'm sure they wouldn't mind. And don't try this at home, I'm a professional.
