radiator measurments

Hey guys Im tight on cash and i need a radiator for my 89 cherokee 4.0..I am going to a jun yard for a temp fix...what year did they use a diff radiator?? and are there any signs for a bad radiator when I go look for a new one...or I should say a used one?

Uts my understand that all cherokees with the 4.0 after year 89 were the same, but maybe someone else can make sure.

Pete