I have a fuel pressure gauge, air/fuel gauge, and a few wires to run for my n20 kit and bottle heater and was wondering where the best place to be to run these through the firewall. More than likely everything will go through the drivers side since thats where the gauges are going. Would it just be better to drill a hole, or is the a good grommet that I'm not seeing that could be put to good use? Thanks.