Hey LewyBoys! 3B and crenwelge know their stuff. The '59 Viking bus has the same style rims.We soaked all the nuts with WD40,and PB blaster for about a week. Then we had to heat the nuts,and we used a "breaker bar",with a 4'pipe,to finally get them to break loose. Take your time with them,so you don't break a stud. Hope you can find some 22.5's,and get away from those RH5's! GOOD LUCK with your frame! How's the 261 coming along?