This tank had the 4 nipples to use with the evap/evac system, 71 apparently was the first year to do this. It's no longer in the car, presumably when they removed the slanty that was in there they removed all of that as well (they also removed and/or forgot the kickdown linkage which I didn't notice until later on). There were 4 hoses connected to the tank when I swapped the tank, and since I wasn't sure if it was a vented cap, I only hooked one of them back up, the one furthest to the rear bumper. This should be venting the tank pretty well I assume (the 3 empty nipples).
