Cable shifter issue, please help!

I have TTI headers in a Dart Sport & had to use thick, long HD tie wraps to pull on the cable to keep it away from the headers. Use 2 and keep checking on them. I worry about them getting brittle & eventually breaking. You might be able to find something existing to use as an attachment point for the zip ties or add something to the firewall. A clamp might be better, as long as the cable doesn't get kinked or bent too much.

Buy a spare cable.....just in case.