Overview Reviews Product Description Intake Manifold - Strip Dominator - Square Bore - Single Plane - Cathedral Port - Aluminum - Natural - GM LS-Series - Each Product Videos Custom Field Product Reviews Write a Review Write a Review × HOLLEY GM LS Intake Manifold Split Design LS1/LS2/LS6 HLY300-256 Rating * Select Rating 1 star (worst) 2 stars 3 stars (average) 4 stars 5 stars (best) Name Email * Review Subject * Comments *