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I just received a catalog in the mail from WCC. Very nice, well put together catalog. Great color pages with tons of accessories for C5 and C6s.
Has anyone purchased the performance packages?
They claim 80 hp from bolt on parts (Hurricane air induction system, MSD plug wires, 170 thermo, corsa indy's, predator programmer, WCC long tubes, high flow cats with X pipe), for $3,599. They claim 120 hp from the stage IV package (above with high flow heads, billet camshaft, hardened push rods, head bolts and gasket set, custom computer) for $6,599.
Has anyone used these systems? Are the gains really that good? What do you think?