For Chevy 67-74 (LS1, LS2, LS3) 1-7/8"/ 3" Stainless Steel Exhaust Manifold Head. Stainless Steel Exhaust Manifold Header for Chevy LS 67-74 (LS1, LS2, LS3) 1-7/8". For LS1, LS2, LS3, LS6, LS9 V8 Engines.
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