Corrosion protection varies hugely between brands, but in Colo., this isn't a huge issue. Some hang down or out more than others. I would look at Tacos with hitches in parking lots and find a hitch with decent clearance and note the brand and then order that one.
Steve H. - KE0KNH
Colo Springs, CO
'78 FJ40, '89 FJ62, '98 4Runner