[hewittca]

The center hub on the stock steel wheels specs out right at 3.5" and my bore on the transits is 3.7". There's definitely some room to tighten that up but I think you're going to have to be really sure you can get the bore centered. I can see on my wheels that the bore is ever so slightly off center, so it's a good thing the bore isn't centering the wheel on the hub because it would probably vibrate.