OER Parts offers a selection of OE Style Manifolds for your 1972 Pontiac Firebird. OER Parts offers 1972 Pontiac Firebird Exhaust Manifolds without Smog Tube Holes, 1972 Pontiac Firebird Exhaust Manifolds with Smog Tube Holes, 1972 Pontiac Firebird Hemi Exhaust Manifolds, 1972 Pontiac Firebird Ram Horn Exhaust Manifold, 1972 Pontiac Firebird Ram Air I Exhaust Manifolds, 1972 Pontiac Firebird Ram Air II Exhaust Manifolds, 1972 Pontiac Firebird Ram Air III Exhaust Manifolds, and 1972 Pontiac Firebird Ram Air I Longbranch Exhaust Manifold.