Knightmare, the Club Cab and the Quad Cab are the same thing really. Only difference is one opens and the other doesn't.
Medic, don't you worry that Quad Cab will work great for ya. I had my truck (with a Quad Cab) since before my daughter was born and she has traveled back there for years with no problem. After nine tears she still fits comfortably with no problem. Only a 6 foot tall person would feel a little tight back there.
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