I'm installing a Zeitronix ZT2 A/F Ratio Meter and Datalogging system and am seeking the best way to route my oxygen sensor harness from the cockpit to the catalytic converter. I want to run the harness down the center console and through the firewall. I don't think that I have enough harness cable to go through the grommet behind the drivers seat. Has anyone drilled a new hole and put in a new grommet? Any suggestions would be helpful.