Just put a brand new radiator in my 92 Cherokee,$143 out the door. took an hour or so to put it in.
It has the overflow tank (behind battery) and pressure blow by cap with return hose, my buddys 87 doesn't.
Man this thing runs super cool now. It ran 210 and up all day before, now I can't break 180 even after a long fast run on the highway.
Old one was scaled, rusted tired and busted.

Might consider just replacing yours with a new one and not worrying about it for couple hundered thousand miles.