filler neck modification

Mopar Tim said

To be honest, I was going to use a funnel to gas up, but found it was not needed. Im in the minority I guess.

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wonder about an alum can that will bairely drive into the filler tube, that has a pump nozzle size hole in the center of it. also why not take an extra vent up to the air breather, with the afore mentioned one way valve in it, no can needed. ???????????