LSX-DR Single-Plane Tall Deck 4-bbl Manifold * The ultimate drag racing single plane for large displacement or high-rpm applications * LSX-CT/DR style port; minor port matching required for optimal port match * Two-sets of injector/nitrous bosses are cast-in for extreme power capability * Extra thick for professional porting and/or boosted applications * 1" raised 4500 style carb. mounting pad