I want to prime my rebuilt 283 for my 65 malibu. I found an old distributor from about a 1970 gm. It seems to fit into the hole fine and the shaft appears identical. It seems I must remove the teeth on the camshaft gear that is on the distributor shaft. Do I do this by grinding the gear teeth off? How about the top of the shaft. How do I make an adapter so that I can turn the shaft with my 1\2 inch drill? Any experience in making such tool is appreciated.