I used the specs from the Mule since I got a spare set of wheels from that car. Overall rear end width that Currie uses from hub to hub is 56.187" and then the wheel size to work with that rear end would be 18 X 12.5" with a 6.5" b.s. I have an early set of wheels Mark tried which were 6.75" b.s. so I had to add 1/4" per side (1/2" total) to the rear end measurements to compensate. It all fits great.

Jody