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				04-21-2020, 06:05 PM
			
			
			
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			| CC Member   
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					Join Date: Apr 2020 Cobra Make, Engine: Backdraft #360 
						Posts: 77
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	|    Not Ranked 
 342 was replaced by 347 I would guess Roush did respond via email today saying that I needed to use either depending on some conditions but the 3923 was stock preferred. |