With single lower mounts, multiple hole lower mounts are an option. 60" centered housing is standard with 28.5" and 33" axles. This housing uses the GN style hubs. 9 inch Ford Floater GN Housing with GM Mounts PEM$429.00 option: Multiple Lower Holes on Metric Housing $50.00 WARNING!!! AUTO RACING IS A HAZARDOUS SPORT. NO WARRANTY IS MADE OR IMPLIED REGARDING ANY RACING SAFETY PRODUCT SOLD BY ART'S RACEMART TO PROTECT USERS FROM INJURY OR DEATH. USER ASSUMES ALL RISKS. ----------------------------------------------------------- phone 660 465-2069 Fax 660 465-2045