I personally had to tear apart my garage and remove shelving from half of the garage to fit my 20' truck in because I wanted a 6' box. It's still tight. Then I went and did something stupid like put a high rise topper with a 7' garage door for some reason so it's stuck outside all winter. Even with air dumped I can't squeeze through the door. The payload I run should really be a heavier duty truck but I minimize towing in Lou of payload. If you want to see a canyon on it's frame, put 3500# payload in it. Heck any half ton spring or leaf, can't take that weight. But the half tons air can.
I probably should've gotten a 3/4 ctd with an 8' and rear air capability wise, but I knew what I was getting with the Ecodiesel and that's what I opted for. I'm not second guessing any decisions. I'm happy and more than capable of any task I've put it up to thus far. Except getting stuck in the mud pulling out a 1ton Ford. Heavy truck, wet gun range, factory tires and it just sunk to the frame