Suppose one could use a different (larger) bottle but this is a very "Dry" system with no aux fuel source and uses a very unsofisticated little "spray -jet" thats positioned over the primaries via a little tube . Its really truly designed for a concealable cheater sytem Just there for S's & G's and thought it was a cheap simple (and harmless extra 25 hp 
And S's&G's you will probably have with it, I would bet. But Yeah, no extra fuel nozzles, I would not press it short of 3, 4 or more shots. 1 or 2 shots might be a bit much, but you built the engine, you would know more than me. (Run it a little more than a tad fat, if that's the case, just my opinion).
Boats is looking SOOO cool and SOOO different! Gonna be a blast!
Ray