How did you run your fuel line?

Ok so I'm working on the fuel system install on my 68 Barracuda. I'm using a 12 gal RCI aluminum fuel cell (2121A),I'm plumbing this to a Fram HPG fuel filter, then to a 12-802-1 Holley electric fuel pump. From this point I need a little advice. Filter/pump is mounted on the inside of the right rear frame rail.
I would like to run the fuel line and the return fuel line on the outside of the frame rail. I plan on running both lines thru the body braces towards the front, then up the fender well to the top of the inner fender well and use two bulkhead connectors at the top.
How can I make the transition of the fuel lines from the inside of the frame rails to the outside?
I forgot to mention I have frame rail connectors. I don't want to run the lines under the frame rails, so I'm thinking to drill holes through the frame rails right in front of the front leaf spring hanger. This sound good? Or maybe you have a better idea?