All fuel tanks need to be vented or you will build up suction and you will stop drawing fuel. You can vent through a vent tube or with a vented cap. So if you use a tank without a vent tube you can either make a vent tube and braze it in using the old tank as a pattern or you can just use a vented cap. I would prefer the vent tube on the tank filler tube especially if you plan on improving performance in the future. For now I would throw that el cheapo electric fuel pump in the trash and get the correct factory AC Delco mechanical pump installed. The factory pump will do the job quite well for now until you bump the HP up quite a lot. You should have a steel fuel line from the tamk all the way to the fuel pump. That should do the job fine until you boost the power up quite a bit. I don't see a reason to do any upgrades now especially if your a student on a budget. The GTO is a factory high performance car and the factory stuff in proper condition will take you well into the 12's in the 1/4 mile. I would change out the tank, get the factory fuel pump installed and change out the rubber connector hoses. Save some money for repairs and emergencies.
Tim C
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Tim Corcoran
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