I'm replacing the fuel lines on my '73 Panther along with the impulse line from the crankcase to my Tillotson carb. I'd like to know what is the recommended type/brand for this lines and the proper diameter. Don't know if they're original, but the lines I currently have on there are 3/16" diameter for the fuel supply, 1/4" for the breather or fuel return line and just under 1/4" for the short impulse line. They all appear to made from the same see through material which is now brownish. I measured the OD on various connection points such as fuel filter, fuel tank, impulse line connection at crank, impulse line connection at carb and breather connection at the carb. They are all at 1/4" except for the impulse line connection at the carb which is .22" at it's smallest point. In searching online parts diagrams, the only listing I saw with a diameter, was the fuel line which was listed as 3/16". I'm thinking if I just get a roll of 3/16" that'd be good. Any thoughts why this might not work?