Emissions Control System ID help, 1971 Duster 340

An yes, N95 is in fact on my fender tag. Looks like I even decoded it as such at one time. But the pieces of the puzzle are finally starting to make some sense as you guys are describing them.

1) Vapor line under the hood attached to breather - check
2) 3-nipple breather on valve cover - check
3) Expansion tube in trunk behind drivers wheel well - check
4) 4 fittings on side of gas tank - have yet to confirm

Anything else you can think of that I can look for as original items still on the car as part of the ECS?