XB9S – running very roughly – tried various fixes – need some expert help!

[Cooter]

You get what you pay for so... terrible off shore junk. It usually has the wrong regulator with too low a pressure rating, just to add to the frustration.

PM Barrett on here for QUALITY fuel pumps and re-build kits

[CrazyBiker]

paul: the mesh sock filter goes on suction side of pump....the metal inline filter goes on outlet/pressure side. the metal filter crosses over to a 1985-87 ford mustang. here are a few cross-reference filters that are identical:
WIX 33095
NAPA 3095
DURALAST FF3330DL

i also HIGHLY RECOMMEND you replace the fuel level sensor while doing this job. if it isn't bad now it will be shortly.
OEM PART # P0789.KA retails for $14. it is #4 in pic.
lastly....look at pic....part #12. it is the ground screw. it's the main connection between the ecm and the pump. clean and tighten the hell out of it.

Attachment 11262

Is there a cross reference for the fuel level sensor or is it a HD part?