Hi I have a 71 240, which the previous (very young) owner removed parts from, thinking they were "getting rid of all that emissions junk". Turns out, I have about half of an a/c system, and this sort of triangular tank, which mounts inside the hatchback, just over the fuel filler tube is missing. I understand that the one I'm looking for is made of plastic, NOT METAL (thanks Mike!) I have been able to locate one on a '72 model car, but it is a different design (too big, made of metal). mine is the older car without seatbelt retractors. (but not so old as to have rear hatch vents). I'd sure like to be able to put more than half a tank of gas in this car sometime, so if you can get me the part I'm describing here, please contact me! Tim timothywalz@hotmail.com