the tank compartment isn't the biggest, but you can get an 8 oz Bubble Jett tank up in there within 4 inches of the engine.
with that it makes it even easier to use two tanks once you decide to do so.
my plan is to switch to a 6 oz in front and an 8 oz Bubble Jett's behind. from my understanding, the Jett 50 will pull from that distance.
this is Methanolover's setup except he used a 12 and 8 oz tank........worked well, and he had a Jett 90 in his Patriot.
scroll down to post #7 and see his setup.
http://www.rcuniverse.com/forum/m_51...tm.htm#5131329
i know with a Jett motor, the fuel pump idea is fruitless at best, but i don't know how the Rossi will run with one.