I'm redoing a 1074 Road Runner and it needs new fuel lines. In trying to order them it says the main fuel line can be 3/8 or 5/16/or 1/4 the return line can be 5/16 or 1/4. Also noted is a vapour return line 5/16 or 1/4. I need to know what I need for this car it is a 400 cu in with automatic. It has a vapour canistor located on the right fender. What size and what lines do I need to orde 2 or 3 l  

main fuel for a bb is 3/8 i dont have a return line in mine and the vapour i think should be 5/16 for bb small blocks are 5/16f and 1/4v hope this helps