Why do you want bigger injectors? What have you done to reach the limit of the standard ones?
There are plenty out there that fit the 4AGE rail but it's not worth bothering with if you have not increased the fuel demand of the engine through mods or if yuo are running a standard ecu.
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would it be much noticable???
it would be very much happy fun if factory ecu stay inboard too many fuels will be happy spent in combustion chamber. program ecu to speak happy talk to many injectors