From what I heard on the clips on the sound thread, the F.I. seems to be a little deeper tone, but I feel in love with the sound of Berks and the gains they got on DDM's Z. Originally, before Berk came out with their CBE, I was going Berk HFC's and Stillen CBE; I'm glad I waited.
AND...with the GB, the introductory price is VURY NIIICE.
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2009 PG 6spd Sport || 30% side tint, 15% rear || All Redline fluids || Berk HFC's intalled~PITA Bolt  || Stillen G3's || Berk CBE || BC Racing Coilovers with 10K/12K Swift springs & RA valving|| SPL rear camber arms || 20mm/15mm spacers
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