Welcome to Stovebolt.
It looks to me like the in-cab tank is a later (54?) one that uses a top outlet in the sending unit. A '52 would have had a bottom outlet. That's not to say that you couldn't use that in-cab tank, but you'll need to run a line from that connection on top.
You have it right as far as the carburetor, but there's no return line or pressure regulator, unless you have a non-stock engine that needs one.
There was no frame mounted tank in '52 models, so that was either added or it's on an earlier frame.
