If you're good with a tig, you can weld a wheel. I've redrilled wheels on a vertical mill, no big deal. As Tech said, they're 72 degrees apart. I had a wheel rep years ago who gave me a bolt pattern template with only about a 1/16" hole where the holes for various bolt patterns go. I don't usually bother with welding the other holes shut, I usually just stick plastic plugs in the holes not used...