Day late and a dollar short but make sure the injectors you get (got already in your case) come with the proper data for tuning. Your tuner will thank you and having that data makes every part from idle to start up to part throttle smoother to dial in and better mapped.
On stock c.i. N/A LS1 stuff you can use the white FAST 36lbers, OEM LS3 injectors with adapters, DW 42lb like Dave mentioned, etc. All of those will flow ample fuel with good characteristics for part throttle.
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2000 ws6
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