Join Date: Sep 2000
Location: Washington, Michigan USA
Copper tubing isn't a good idea to use for this application - it's subjected to vibration, which will work-harden the copper and it will eventually crack. The older OEM Corvette applications used what LOOKS like copper tubing, but it isn't - it's copper-plated STEEL tubing, just for that reason. The plastic (nylon) tubing will work just fine, as long as it's routed so it doesn't rub on anything sharp and you use a rubber grommet where it passes through the firewall.
'69 Z28 Fathom Green