EFI fuel line size

[bruce plecan]

No less than the -8/.5" for the high side, and -6/.375 for the
return.  Even with staged pumps/pumping your going to bypass
a bunch of fuel at idle, IMHO.  Like ya said do it right once,
if it's too large no problem, but too small and trouble.
  There was a thread about this a couple months ago,
or at least similirar.   In the Buick V-6 Power Book there is
a chart for line size pressure volume suction etc.  Think
Earl's had a version, and the GM Power Book may have had 
it at one time.
Bruce  Overhead view of the 98 F1 cars, looks like every 
           one is using a cone shaped hat as a mold for the
           nose, and just adding wings.....