Hi Pattratt,
I'm building a Valiant as well right now, and I have attached a few photos of the installation FYI.
Notes about the plumbing: I was originally planning on using the CH 45° fuel fittings and have a clamp on the fuel line outside of the plane, however I drilled the holes to far down on the fuselage causing the fuel line to get kinked against the engine. Therefore I went back to an old school design instead with a fuel filter outside without the 45° fittings. If you place the 45° fuel fittings higher on the fuse side they should work as well giving an even cleaner/more pro look...