Need Heat Protection for Floor Shift Cable, etc. (904 Torqueflite)

The clearances are very tight under here and the TTI 2 1/2" head pipe I am installing is going to melt that plastic "conduit" the shift cable is wrapped up in. What are you all using to protect a shift cable from melting? Some kind of wrap maybe? I have no experience with wrapping spark plug wires or other cables with high-tech stuff. Thank you.

engine install 1.JPG

engine install 2.JPG