Air Cleaner Snorkle Hose

Any suggestions where I can find a new hose that goes from the air cleaner snorkel to the cold air intake for a 351 C ? Its a rectangular hose that is about 6" long.

It has been a long time since there was a rack of those things in just about every auto parts store.

Have you tried searching on eBay? Or someplace like Rock Auto?

I have tried the on line stores as well as local parts houses. I also tried WCCC.