AN sizes are in 16ths of an inch. -6AN is 6/16" (3/8"), -4AN is 4/16" (1/4"), etc. If you don't want to mess with the AN fittings then there is no reason to buy the associated fuel lines (IMO). If you want to use hose clamps just buy fuel injection hose from the auto parts store (if you can find one that sells it--good luck). I'm nos ure that hose clamps will seal the braided steel lines. It all depends on what the liner is made of. If the liner is a soft rubber-like material hose clamps should work, but if it's teflon hose clamps probably won't seal it.
'87 Shelby Charger
dude dont be a hack. use the an line and fittings. You will buy these once and will out last your life if maintained and kept from exhaust heat. Remember all fighter jets and commercial jets have the army/navy lines and fittings. or the hack laugh at the **** box 80's dodge way that is kinda exceptable on farm equipment would be to run as much hard line as you can bend it nice and double clamp ...
If you can't afford to do it right don't do it at all
call or go to jegs get the parts you need and use the math that was posted earlier to figure what you need:) :)
69 Dodge Coronet r/t 9.80 @ 140 mphhttp://www.actionracingphotos.com/photos/2003/080903NEDTIMETRIALS/pages/P8092233.htm
98 3500 400hp/740ftlbs black smoking diesel.
69 power wagon needs help
85 glh omni