There were two different models that were discussed previously that will work. It seems like the consensus (and the one I bought - therefore the best

) is the AFC-152.
Word to the wise: when you wire it up to your bike...do NOT use the supplied Scotch-Lock connectors. My bike wouldn't start after I hooked up my Dan Marc, and I traced it back to the Scotch-Lock not even breaking through the insulation on one of the tapped wires. (Of course, if you have any electrical experience, you already knew not to use those crappy connectors.)
I forget the measurement of the fuel line. Sorry.