I can only comment for the berk, but it is nice and deep and burbly. makes it sound like a 350 on steroids. plus the berk looks almost stock, but has oval tips. I only have the cat back, no hfc or test pipes. I think it is one of the only exhausts to have an x pipe in place of the stock y pipe. somebody can correct me If I am wrong. two great exhausts to choose from tho, can't go wrong with either one.
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2010 PW 370 base+sport 6mt
Stillen g3's/ Berk CBE / Stillen 19 row/ uprev: 308whp 255wtq dyno jet @ specialty z.
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