I think i just thought of a simpler version. What about using a 2-line method, putting a T in the pressure line with a one-way valve before the T. That way you can fill it from there without worrying about the fuel going back into the muffler. The carb line would be untouched.

So another Q. is what are some better components to use on this kit, I want to get pretty good components to raise the reliability of the things i have heard others complain about in other threads. For example, any upgraded y-systems or servo horns, etc?

I saw this beautiful cowl job I'm thinking of doing.. Its so well cut...