How about what year do you have and what state are you in?
Is it for a restoration or do you need to pass a smog?
Someone here will have the answer for every state
Found the answer - in the Parts wanted section : 1977 and you are in CA
You can use a Charcoal canister from an 80's 90's Ford Mustang, you can bend up your own 1/4" lines from the tank(s) to the canister, (If you have two tanks there is a check valve that mounts to the frame under the pass seat) the flex hose from the CC to the air cleaner is still available.
Do you have anything of the smog equipment? Air cleaner, flex hose, air duct from the Rad support, pre-heat tube and heat stove from the R/S exh manifold, the exhaust manifolds?
I am just touching the surface here....
But you do have a smog pump bracket from BB above
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