Does anyone know what the standard size is for the factory hitch that comes with the 2003 Sport Edition? Reason I ask, I ordered the Go Rhino hitch step from Cabelas.com...told them my car...and once I try to plug it in...it didn't fit. It's too big. Does that make any sense? the htich step is a 2 inch by 2 inch and the receiver on the truck is a hair too small. Measures about 1 7/8 inches square. I thought sizes for hitches were pretty universal. Any advice.