Two questions. 1. When did GM switch over to the metric lug size pattern. Ex 5 X 100mm. 2. What types of rims (GM manufactured) will fit on stock Corvair late model hubs. Has anyone got a list with correct offsets?? Mark Aksamit ePro,GRI Direct 602-723-0383 Verde Valley 928-251-5053 http://rltrmark@cox.net Visit my website at http://myverderealtor.com