Most of us who run dual setups make our own fuel lines. SS will be harder to fit due to the tight bends and double flares, but it can be done with the proper tools.
I am guessing your carburetors are a matched set? with matching ID numbers and internal metering? If not, better start again, they must match due to the large number of variations in the Model B. Off the shelf rebuilds usually don't work, since rebuilders mix and match parts, thats why you won't find number tags.
Joe
