exhaust where?

I am looking for the "corrugated" exhaust tubing they used in choppertown. I have looked all over, does anyone know who might carry it? Or maybe the offical name so I can do a search.
thanks!

 

Flex-A-Pipe? J.C.Whitney used to have it. When ya didn't have access to a bender........OLDBEET

 

Thanks for the info. I did some searches under that name but all i got was people writing what they used in certain situations. I am determined to keep trying. i have my mind set on bellflower like pipes on my burb.

 

try "convoluted" tubing,I think that is
what it's called.