Hi all.
I am restoring a 1991 1275cc Carb Cooper and am struggling to find the correct insulated fresh air duct pipe that fits under the L/H wheel arch between the intake behind the grille (CZH1318 - No.21 in the attached image) and the L/H internal cabin vent.
I have found several that are 50-60mm dia, but I need 65-70mm dia.
Anyone had any experience with using a different product or know where I could buy the right part?
Thanks in advance.











