If it was the FF2003 then yes he needs the new nipple (FSN-2001), then he can run a Donaldson P553203 with the Baldwin BF1275. He doesn't have to run a 2nd f/w sep, but it's not a bad idea. If he routes thru the OEM filter I would put a BF1275 and a Donaldson P551313 on the FASS, and then onto the OEM filter.