Re:We are using a Ford van E-350
Your Ford dealer or a transmission shop could change the rear end to a higher-ratio unit (maybe something like a 3.73?) for a cost that won't hurt too much. It will lower your fuel economy a bit, but not much - and the reduced strain on your engine and transmission will probably make it pay for itself.
BTW, Windy is right - you'll love those McKesh mirrors.
Bill
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