There are two or three Wix filters (others make them) with built in orifices. One number is 5/16, the other is 3/8 and yet at least one other that is a 90* design
33041:
Wix Filters 33041 WIX Filters Fuel Filters | Summit Racing
I believe 33040 is 5/16, 33041 is 3/8, and 33054 is the 90 design