I don't think the spike merge is that critical, is it? I mean those 2" primaries to 3" collector are going to flow IMHO. I've never really seen or read about then being critical. Maybe someone can "learn" me on that lol.
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2001 ws6, 40k miles, Ls3 416 stroker, short block built by PER the rest by me. LPE Ls3 heads milled to 12-1 comp, FAST 102, NW 102, kooks 2", dual DMH cutouts, Magnaflow C/B, BTR cam + springs. Full UMI suspension.
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