Would someone be kind enough to take a measurement for me?

[Slowguy]

I received my accuair cvt tank today. Looks like a really nice, complete setup. It is a pretty piece of equipment but I still would like it out of sight. I’m thinking attaching to the frame rail passenger or driver side on the flat outer spot at the rear of the cab. I’d like to mount it now so I can get all the plumbing nice and neat. The only issue is that there is no cab and no bed on the frame so I’m afraid I’ll choose a spot then when I set the bed and or cab I’ll have missed something. It would be fantastic if someone could take a tape measure to an assembled truck and quickly see if it’ll mount where I’m thinking (and not be seen from he side of the truck). It looks like I’m at about 6” in diameter and about 29” long.