Forgive me in advance for asking such a stupid question. Lately I've run across a lot of 3rd gens around where I live, however the more and more I see that are SR5, and look almost identical to mine, more and more do not have a trailer hitch. Was a trailer hitch not standard for every SR5 and Limited model? Being that I do apparently have the tow package, does that make my SR5 any different from those who don't have the tow package?