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Wilkies performance. Smaller shop great prices and reviews. Also watch Richard Holdner on youtube. Prolly the best source of back to back same motor same day Dyno test out there. He taught me a lot on What stock heads will do.
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2015 2SS auto. AGP twin turbo, LS9 cam, BTR 660 springs, LS9 Gaskets, ARP studs, 400lph UPP fuel system, MBRP XP 3” cat back, 305/30 Micky Thompson Sport comp tires. 12” Fockford fosgate P1, Rockford Fosgate 600w amp.
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