I have a '39 Ford two door sedan on an '86 S10 Blazer frame, 355 SBC. The previous owner had installed a '68 Volkswagen fuel tank filler in the left rear 1/4 over the rear fender. The fuel neck is a non-vented type so I'm not running a vent. Is this okay? I haven't had any problems so far. There is a third line coming off the S10 sender which I plugged. Maybe I'm second-guessing myself. Thanks in advance, Rod