04 Stage 4 Performance Package

Essentially our Stage 3 package with a core emphasis on cooling - as every serious gearhead knows it takes a cool-running engine to produce peak power from your C5 Corvette! Stage 4 performance package includes: Callaway Honker induction system, Modified Products-spec shielded spark plug wires, Champion Iridium spark plugs, 160 degree performance thermostat, Hypertech Power Programmer, Kooks 1 3/4" 304 stainless steel long tube headers, Kooks 304 stainless high-flow catalytic converters with X-crossover and mid-section pipes and CORSA Xtreme muffler system, Direct Fit all-aluminum radiator with built-in (EOC) engine oil cooler and transmission cooler fittings. 30+ hp gain. Fits all 2004 LS1 & LS6 Corvettes. No Discount.