The plumbing kits allows for an OEM bolt-on affair. Unlike others on the market, the kit does not reuse the awkward 180 degree feed line and runs the fuel rails in series. Instead, this kit eliminates any unnecessary fuel hoses that route over the top of the engine preheating the fuel. It plumbs the fuel rails starting from the SAE quick disconnect fitting upstream near the firewall. The rails are ran in parallel for even fuel distribution with the use of our high flowing billet aluminum Y-adapter fitting. All hoses are high quality PTFE compatible will all fuel types including E85. Billet aluminum O-ring plugs are included for all unused ports.