Regular cab under Outfitter Apex 9.5?

Notakwanon wrote:
The frame under my 2006 GMC 2500 HD diesel 4x4, extended cab (2 doors) has rusted so badly that it cannot be repaired, so I have begun looking for a replacement. The bumper to bumper length of my truck is 20' 10", and with the Outfitter Apex 9.5 on it, 2 more feet. Extended cabs such as I have now are no longer made, the most popular trucks being the 4 door models which are a foot longer. The truck I have now is a problem in tight parking lots and my garage, so I really don't want something longer. When I showed the salesman a photo of my present rig and told him I wanted a regular cab truck he said 'bad idea', as the overhang of the camper would obstruct vision. Although it is not possible for me to take an accurate measurement, my guess is that from the inside rear edge of the truck box, the camper overhang will be 70 inches.
So is an Outfitter Apex 9.5 on a regular cab pickup a problem? I doubt it, but if you agree with the salesman, I would appreciate your comments if you have experience with this. Thanks.

Aside from your statement about your old truck rusting out, the rest of your post makes little to no sense.
Ford and GM both still offer extended cabs in 2020 models and all previous ears back to the 80s/90s, if that's your preference. Ran is the only one of the big 3 that dumped the ext cab model, 10 years ago. You can choose from new or used in either brand.
And rear overhang is rear overhang, only related to the length of the truck bed and nothing to do with the cab configuration.
If the available cabin space in a reg cab truck is acceptable for your purposes, reg cab trucks don't give up anything in capacity or capability to ext or crew cabs. In fact, they're a bit better in some areas, like greater weight capacity due to weighing less, and more maneuverability because they're shorter.