I'm not familiar at all with the tanks you guys get in the US - the ones that have an expansion thing on top of them (opposite side to the fuel level sender)... All I can say is that on my European tank (no alien expansion attachment) the vent line comes out from the same place under the tank as the return line (at this point it is a hard line) and then goes up and over the subframe and comes out to a weird rubber boot just in front of the driver's side rear wheel. There is only one vent on my tank (if you don't include the fill neck which possibly has some sort of secondary vent in the cap).

__________________
1992 W201 190E 1.8 171,000 km - Daily driver
1981 W123 300D ~ 100,000 miles / 160,000 km - project car stripped to the bone
1965 Land Rover Series 2a Station Wagon CIS recovery therapy!
1961 Volvo PV544 Bare metal rat rod-ish thing

I'm here to chat about cars and to help others - I'm not here "to always be right" like an internet warrior



Don't leave that there - I'll take it to bits!