If you want a high capacity injector over 750cc, i recommend Injector Dynamics.

They have a 1000cc SATURATED injector and a 2000cc SATURATED(YES SATURATED) that is capable of up to 3700cc of fuel supply at 130psi fuel pressure, WHILE IDLING LIKE STOCK STOCK ON A BONE STOCK ENGINE.

They are on my switch to list for the future.