Not possible to do it fully, rally cars often use microbore copper water pipes to reroute fuel lines inside the car (to avoid damage), but you still need some short rubber pipes to allow for movement and connecting.
Great work as ever Paul, I'm just glad I run rally cars where I don't have to worry about the state of the paintwork, as long as its one colour and it keeps the rust a bay thats all that counts. Scratches and marks, are all 'war wounds' of competition! :)
Is the noise there only when you press the brakes or all the time? If only when you press the brakes, then a bit of cooper slip/grease on the back, and slider parts of the pads will solve it. If all the time then it is more likely a wheel bearing.
It must be leaking somewhere then! Get it warm and see where it is leaking from. Cardboard under the engine bay is a useful to spot where drips are coming from but loosing this amount will be more than a drip!