My '72 Ford F100's poor little 9" doesn't seem to care for the 4bt's low-end, 3.55 final drive ratio and the 265/75R16 tires. And the pinion u-joint keeps going out too. So the plan is to find a D60 with the same wheel mounting surface (WMS) to WMS width as the front axle. My 72's front axle (Dana 44) width is 69" from WMS TO WMS. Can any of you provide me with some options for a Dana 60 that has approximately this same WMS as the the front Dana 44? I know I'll have to change out or redrill the hub flange assemblies, and some other minor fab work, but that's not a biggie.