Ryan,
I used SS and braided for my fuel lines. Aluminum tubing is light and easy
to work with, but is easy to dent from flying rocks. I picked up everything
from Summit Racing. 3/8 line for supply and 5/16 for return.

Go over to www.summitracing.com and take a look at their prices. They
usually have everything in stock and when I order in the morning, it's usually
on my door step the next day. Plenty of time before your weekend project.