72 emissions

[franko72]

My 72 truck doesnt have the evaporative charcoal canister for the fuel sytem.Did they come on the 72 super cheyenne w/402?There isnt any type of emission parts that I can see.I know that everything tanked in 73 .I am trying to replace the fuel lines were the dealer added an extra saddle tank on the passenger side. They installed a lot of rubber tubing hose that is getting old and leaking at some fittings and clamps.I noticed an extra line that was not connected.a diagram would be great if someone could show one for fuel line routing on the 72.the tank does not have a return line.