I would love to hear a few opinions on what fuel line to run, if I should run a return, and what mechanical pump and filters to use. I will be running a mild build 318 with a .480 cam and a 600 cfm Holley on performer intake.
In response to this and your PM:
Regarding fuel lines: I used the stock type steel 5/16 with 1/4 return. Got them from Fine Lines at Carlisle a couple years ago for $60 each. Vent line is 2 pieces joined by a rubber hose and clamps near where it comes from under the car into the engine bay.. The lines were far more accurate than I think I would have been able to bend and saved a lot of time. I posted pics of line routing here: http://www.forabodiesonly.com/mopar/showthread.php?t=280112&highlight=tank. Not sure what they are plated with, but seems good. No doubt stainless is better if you want to spend a few bucks more. The small lines from pump to filter to carb - I have an original pieces there, but you can buy those prevent also if stock configuration, or you may want to custom bend if yours varies much from original.
Is your sender 5/16 or 3/8? I'd match whatever you have for line size. I doubt you would ever need more juice than the 5/16 would provide, but if any chance of that, now would be the time...
Here's a good write-up by Dan Stern(slantsixdan) that shows the charcoal canister and describes how vent factory systems functioned. http://www.allpar.com/fix/fuel/evaporation-control.html
The first canister pic in the article shows a port plugged. Mine in pic here uses that plug to vent the carb bowl. (Holley1945 on slant) I don't know enough about other non-stock venting options to offer any advice.