GSC Power-Division Exhaust Valve Guide Set of 10-Standard (gsc3069-10) _T304_Stainless_Steel You'll experience dramatical changes in

You'll experience dramatical changes in the SR20DET with just the increase of 200cc in displacement

tuned and dyno-tested to fit specific Chevrolet Cobalt models

Comes with an easy-to-follow instruction guide

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This allows you to easily tune your suspension set up to whatever works best for your specific purpose

GSC Power-Division Exhaust Valve Guide Set of 10-Standard (gsc3069-10) _T304_Stainless_Steel You'll experience dramatical changes inGSC has quite simply made a series of valve guides that fit properly, are easier to install, and shaped to help air flow instead of just copying the OEM design. The GSC Power Division valve guides are made from true C67410 Manganese Bronze and turned on a dedicated precision CNC turning center. What this means for you and your installer is less time fitting guides to the head due to holding the tightest tolerances in the industry with the best quality