power steering pump help

[xironworker2003]

i have a 1998 ranger with the 4.0 I have hydro assist. so I need a pump with more volume and pressure. one guy gave a summit part number for a direct fit. the pump is wrong, meaning part number was wrong. another guy gave a napa and cardone part numbers, those numbers do not exist at either company. any help would be grateful. ps. I do realize I have to grind the mount

 

[Kona]

Quick check netted this, other then that I have no idea. http://www.therangerstation.com/tech_library/hydro_assist_steering.shtml