flex pipe

["James Shope" <healeymanjim@JoiMail.com>]

while the machine is up on blocks i noticed that the exhaust flex pipe is not
flexible anymore and the inside pipe appears to have a leak at one of the flex
joints.  where can i purchase the heavy duty flex pipe used on the exhaust,
and would stainless work better and braze up ok?  healeymanjim