Megan Racing T-304 Stainless steel headers-94-01 Integra LS/RS Application: Acura Integra 94-01 LS, RS, GS Only Fit on Engine: DC2 1.8L L4(4 Cylinder/4CYL) Header Type: 4-2-1 2pcs Inlet/ Outlet size: 1.75", 2.0" Number of O2 Sensor Hole: One (1)