The kit is supplied with rubber grommets to protect the rubber fuel lines passing through the firewall. I don't want to have grommets for anything other than the GPS antenna cables to pass through. I'm going to install AN6 "bulkhead" fittings for the fuel lines but the original firewall holes are too large. Today I manufactured a steel plate that is riveted to the firewall to allow installing the AN fittings. It is also sealed with silicone to prevent fumes leaking through.
