speedometer cable protection from heat

Im working on my 66 Dart. I have TCI headers on my small block and was wondering what others have done to protect the cable from being burnt by the headers. What type of wrap have you used that worked. Are there any options to use a non plastic cable housing? If so where can I get one? I plan on wrapping mine with a heat shielding wrapping but not sure that will be good enough.
Thanks
Rod


I would recommend sometning like this with foil on the outside and some fiber/cloth material in the inside....

Vapor Blockā„¢ Fuel Line Sleeve