They all fit but are in two distinct groups, 67-71 and 72-76 because of the passenger charcoal canister area. Sometime in the late 71 timeframe they changed.
They’ll interchange 67-76. If you want them to be “correct” you don’t want to mix the early and late versions, and year to year there are some different mounting hole locations.
If you have a car with a charcoal canister and want to keep it you’ll need one with the indent on the passenger side. If you don’t have a charcoal canister it doesn’t matter which one you use beyond being able to tell the inner fender isn’t original to the car.
