what size fuel injectors?

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cxs4887

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my 01 yukon has the 5.3 and a whipple supercharger pushing 8 psi max im leading to believe injector #8 is bad so im replacing it. however i THINK the injectors are the stock size since this whipple system is the one that has the two additional injectors out front. can anyone back up that assumption? for reference i have a small misfire on #8 and its running lean on that side of the engine.
more info it has aftermarket headers and exhaust stock thermostat temp. new egr valve fuel filter spark plugs all that jazz
 

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