Thank you for the response. After some more research it looks i may go with a single vent EEC tank from a 72. The filler tube opening looks to be in the correct location for my 70. My replace shown above is too far to the front of the car and i would have to cut the opening in the trunk and flex the filler tube over which i do not want to do and thats the main issue i have been having. So i was assuming because my car came with the 4 vents it was mandatory i needed to run the same tank because of the location of the opening for the filler tube.