316 e30 ,changing to fuel injection 318 i

[tonymiser]

well looking under the car at the fuel tank i noticed an extra metal line right next to the gas flow line that goes to the fuel filter and then to the pump, is this extra line wher i conect for the return ?

also where is the breather hose for the fuel tank located, is that the breaded hose that i saw just near to the float under the rear set