Why couldn't you run a seperate line to each intake runner? It looks like there is enough space. Would it be worth the extra effort? Or is just a single nozzle near the throttle body good enough?

 

Being that the L uses a open intake design, there is not that big of a problem of distributing the air/nitrous across the eight cyclenders. Direct port injectiong would be cool to see, but there is no point in it; IMHO. The single nozzle befor the TB is enough to make this motor more than happy. Also going through the Eaton, the nitrous has a better chance to atomize with the gas (wet shot) and the incomming air.