Vibrant - 103074-1 Merge Collector, 1.875" Inlet I.D.; Merge O.D. - 3.50"; Outlet O.D.- 4.00"Recommended Products: 1st Choice PN: 10340, 2nd Choice PN: 2604, 3rd Choice PN: 10340, 4th Choice PN: 1194, 5th Choice PN: 13035Vibrant Performance has developed...