Your best bet is to use an external image host, then link them here. I use imgur, as it has phone apps and everything.
As far as the rockers; I don't personally know about the crewcabs. I know regular cabs have one inner, one outer. As far as backing plates/floor section; if they are what I think you mean, they are sold separate and you can get them if you need them.
The rockers, on regular cabs, don't go to the door posts. The cab corners/door posts are sold separate. Crew cabs may be different, I'm not sure.