I am not really sure what that stuff looks like anymore. You might just try NAPA or some other parts store (just not autozone or checker probably) and see if they have any. I used to be a counterman at a local parts house and I remember Gates Rubber having tube for intake and for heaters and stuff like that...
Go to your local aircraft supply and get some flexable ducting made from red silicone material with a wire spring inside. This stuff is extremely flexable, heat resistant and easy to use. Kinda expensive since its aircraft rated but will work in a hostile environment like a charm. Also go to a website: www.aircraftspruce.com/menus/ap/ducting.html