My brother has a 79 Fairmont Futura (a Fox Body car) and is looking/hoping to get some Konig Beyonds, at 18x8.5, for it... anyone got the idea on what he needs to the five lug conversion and sizing of the tires?

 

He is going to have to do his own measuring on that one for the tire size. For 5 lug he can any of the 5 lug options available to Fox Mustang owners but before he chooses SN95 or Mark VII rotors and GT spindles he needs to know the offset of his wheels and get his measurements in order there.