The Killer B Motorsport V4 Performance Oil pan is designed to reliably meet the demands of high performance Subaru Engines used on street or track applications. This Oil Pan holds an extra 1.3 quarts of oil, over 30% increase in capacity over the OEM one. This Oil Pan was designed to work with their Ultimate Oil Pickup (OEM ones are known to break), but can be modified to work with the OEM pickup.  This oil pan works with almost all headers and all are fit and leak tested before leaving Killer B Motorsport. There have been reported issues of fitment issues with some Invidia headers, but not all. Each pan comes with an OEM sized drain port as well as one 1/2" NPT Port.  You will need to get a plug  for the NPT port if you don't plan on using a quick drain valve or anything else.  We have all heard the horror stories. You’re just driving down the road minding your own business and then boom your engine blows without warning. This ULTIMATE OIL PICKUP uses a .12” thick double bracket, 3X OEM oil pickup tube thickness and a brace between bracket and oil pickup tube to further strengthen the assembly. This is a super duty, engineered solution. No other vendor has anything this rugged ava