Talon motor

Ive got a 90 talon and its runnin on 3 cylinders. I'm pretty sure its the rings since the head was replaced 5k miles ago, should i swap it out or put in new pistons, also can i just replace the rings? or the pistons w/o replacing all the bearings and gaskets

First off are you sure you are getting fuel and fire to all four cylinders? And if you are going to tear down the block that far you might as well just get a rebuild kit!