Some competitors have three cab styles, but the Ram 1500 offers only two, 

quad cab and a crew cab. The quad cab is an extended cab with a small rear

door and the crew cab has a full size rear door. A quad cab is standard 

equipment at most trim levels, 

and crew cabs are available at all trim levels. 

Limited Longhorn, Limited and 

TRX come with crew cab only. Adults can easily ride behind any model,

but it's worth upgrading to a crew cab Which Ram 1500 Cab Style Is Right for Me?