I have two cars that will be running external hi-pressure walbro 255's. One is a TD, one is not. The one that's not a TD is running a custom sump in the gas tank. No provisions for a fuel sock, so I need a good, high flowing filter to put before the walbro. Fuel line size is 3/8, would want the filter to be made for that size or larger. Can anyone suggest a specific filter?