Georgia Flash,
When I replyed I saw that your car is a 75.
I sould of asked what engine you have.
If it`s NOT the L28 (fuel injected) then like Mudge said, "does it mater".
If you are using the stock fuel tank, you might need some of the preformed (vent hoses) from Nissan.
Keep in mind (if it`s NOT FI), you don`t need all those vent hoses.
All you really need is 1 good size vent hose(from the top of the tank), a feed & return and block the rest off (again, if it`s NOT FI).