Yup, I don't believe your dealer would replace the in-line fuel filter simply because of a second fuel pump. The fuel filter should be in-line, on the starboard side of the V-drive. My '05 24SSV has a little holster that secures it in place and it is screwed into the wall there. I don't have the Cat engine, but I do have the 340 Indmar, I assume they'd be in the same place