This is the air cleaner pipe I am looking for, mine is getting fragile, the plastic strap beside it I believe are unobtainable, the last one I saw on a car was mine!! but I think these could be easily 3D printed if you know anyone with a printer. The pipe is wire reinforced but made out of some sort of paper/cloth/cardboard material, I see yours has writing on it, any chance of there being a name. It has a 55 mm internal dia and is about 460 mm long, tried a few places but no joy. I like you am trying to keep original.
I stripped all the rear off my car last year powder coated and re-bushed all new springs and shocks etc. On mine there is a rubber fuel pipe that goes from the tank across the car which you can now get to with the suspension off, it's a good idea to replace this while you are in that area.
I will sort out some Montreal pic's later, but have to warn you that it's my project and been going on for a while