I called the Tire Rack and they told me that a factory backspacing for a 67 Camaro is 3". They also told me that they will not sell a wheel with anything other than the OEM backspacing. What would be the benefit to having a larger backspace? I was wanting to use a 5" baclspace, but when Tire Rack told me it was 3", I started to wonder what the pros and cons are of a larger backspace. Any help would be appreciated.