In the dodge truck brochure it states that the QC long bed is approximately 2 inches longer then the mega cab model. The sales person says that is not correct. I ask all of you this because a mega will fit in my garage with about 5 inches to spare, and I am now considering the QC long bed after researching benefits on this site. So, is QC long bed same length or is it longer? any help as always is very appreciated.