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Discussion Starter · #1 ·
My SC GT is putting out 390rwhp with 373 torque. I just bought some JBA shorties(CARB legal-CA) I plan to redyno it next week to put to rest if headers actually help the SC GT's???? Ill be happy if I can get over 400Rwhp! Any other SC GT's with headers out there to compare with???:wavey
 
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