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The stock LS3 will need a good tune to keep the 9 pai from that charger under control. Like above, a procharger, vortec, maggie, etc.. will be cheaper. But no it will not be offered, only on the LS9 motor.
its a stock peice, the aftermarket leaves plenty of room for improvement on an already good design. just wait till someone starts porting them out and improving on some weak points and get one then.