Looking for some information concerning door sizes. I would like to put some side window visors on my crewcab. I like to install them just on the front doors, I personally do not like the look of visors on the rear doors. My question; are the regular cab truck doors the same dimensions as the front crew cab doors? I just don't want to spend the extra dough for the set of 4 when I won't be installing the rear visors.