7-13hp gain on N/A setup. Header is design to support up to 300HP B series Supercharged setup. Requires swap the oem 2.25 catalytic converters flange to aftermarket 2.5 inch version. Or have a exhaust shop do a custom 2.5 exhaust system with Magnaflow cat. Fits: CARS BELOW WITH B SERIES SWAP.
If you have an EF or a DA, you must trim the front cross member for clearance OR use aftermarket traction bars. Will NOT fit OEM Catalytic Converter without modification. Due to oem cat flange is only 2.25 inch our header outlet is 2.5 inch.You must cut off the flange on the oem cat and replace it with the 2.5 inch version to be able to bolt on to the header. OFF-ROAD USE ONLY NOT SMOG LEGAL CAN NOT BE USED ON EMISSION CONTROLLED VEHICLE. The item "1320 Performance B Series 4-1 Kamikaze style race header JRSC & all motor b18c" is in sale since Tuesday, February 23, 2021. This item is in the category "eBay Motors\Parts & Accessories\Car & Truck Parts\Exhaust\Exhaust Manifolds & Headers". The seller is "1320performancefreak" and is located in Elk Grove, California. This item can be shipped to United States, Canada, United Kingdom, Denmark, Romania, Slovakia, Bulgaria, Czech republic, Finland, Hungary, Latvia, Lithuania, Malta, Estonia, Australia, Greece, Portugal, Cyprus, Slovenia, Japan, Sweden, South Korea, Indonesia, Taiwan, South africa, Thailand, Belgium, France, Hong Kong, Ireland, Netherlands, Poland, Spain, Italy, Germany, Austria, Bahamas, Mexico, New Zealand, Philippines, Singapore, Switzerland, Norway, Saudi arabia, Ukraine, United arab emirates, Qatar, Kuwait, Bahrain, Croatia, Malaysia, Brazil, Chile, Colombia, Costa rica, Panama, Trinidad and tobago, Guatemala, Honduras, Jamaica, Antigua and barbuda, Aruba, Belize, Dominica, Grenada, Saint kitts and nevis, Saint lucia, Montserrat, Turks and caicos islands, Barbados, Bangladesh, Bermuda, Brunei darussalam, Bolivia, Ecuador, Egypt, French guiana, Guernsey, Gibraltar, Guadeloupe, Iceland, Jersey, Jordan, Cambodia, Cayman islands, Liechtenstein, Sri lanka, Luxembourg, Monaco, Macao, Martinique, Maldives, Nicaragua, Oman, Peru, Pakistan, Paraguay, Reunion, Viet nam, Uruguay.