No difference in tank set up between a 2 stroke and 4 stroke engine (unless its a YS). A 2-line set up is fine if the line to the carb is easily accessible (i.e., not cowled in). One line for the carb, connected to the line in the tank with the clunk on it. A second line for the muffler pressure tap, connected to the line in the tank which terminates at the top of the tank. If the carb line is not accessible, a third line could be run to a fuel dot mounted on the side of the cowl or fuselage.