I have a dead stock '57 Bird with the Holley 4 barrel... I will take some pix of the fuel/vacuum lines today.. The pix will also show how I hooked up the PCV system from a '64 Ford 292 trk onto my 312.
The attached pix don't show very good detail..they are just for a general idea of how the engine should look. Kinda gives you something to dream about.
I hope you are aware that you will not be able to use the original '56 distributor with the Holley.. The later model 292 distributors will work, however, you will loose the tach drive feature..