Power Streering Info

Hello Friends, would anybody know the part number for the power steering pump for my ´88 xj cherokee please, or wich other jeep vehicle uses the same pump. here in southwest mexico there were no xj's im1988 and it doesn´t show up on the parts catalogs. it has the 4.0 ltr. motor with M.P.F.I. and automatic transmision and the serpentine pulley. I really appreciate all your help. thank´s.

What kind of parts houses do you have in Mexico? Also, could you buy an XJ in 1990 down there? The systems are the same from '87-'90. That might be a way to find a listing for it.