Here you can find hose holders for mounting fuel hoses, and possibly also wires. If you need to run fuel hoses under the car, it's important to examine if it's legal in the branch of motorsports you take part in. We recommend you use fuel hoses made from aluminum or copper if you plan to run them under the car or use a protective tube.
You can use a fitting with an AN8 intake and an AN6 return, to get a really good flow to the engine, this is a very popular way of doing it.
You can also get single fittings if you only need to run a single hose, as sometimes requires if you eg. have a carburetor engine.
Or lightweight aluminum fittings with rubber-effort to protect the hose.