I will take some close up shots of the plugs.
Not sure on the backup camera. Unless you have a plug that mine doesn't have, I suppose it is possible.
I replaced the original with a kenwood DNX570HD, ran it for a few months, swapped it out for a pioneer avic X950bh, ran that few a little bit, then swapped it out for the kenwood DNX571HD. Which is what is currently I'm there now. Install is very straight forward for a DIYer. Provided you have all the correct parts. This is what I do for a living, so for me it's no big deal at all.