Door ?

I have a issue with my drivers side door that i am trying to fix...
The upper hinge roller is broken and the door kind of sags a bit i went to autozone to try to pick up a hinge repair kit but the hinges or bushings dont seem to be able to repair it. I was going to buy one but its kind of of expensive. so is there a way to replace the roller or should i get a used one from the junkyard? Do hinges from any 2-4 door g-body fit? i was going to just jack up the door and adjust it but i figure i should fix it right the first time.Is there a replacement roller? Thanks

Update: i just replaced the door hinges on the drivers side door. I found some off a 81 4door regal. i pulled the them off as most of the 2dr g bodys had the door hinges really shot even worse than the ones on my car. I redid the hinge bushings even though they were in really good shape. Obviously the 4dr car doors are not as heavy and they were exactly the same. I pulled the upper and lower for only 10 bucks plus another 10 or so for the pins and bushings. I rebuilt them at work during my lunch and they kind of were a pain in the *ss. But my door is a ALOT better but its a little in on the top near the b pillar and out on the bottom. So i am going to mess with it some more to see if i can get it aligned better. Just trying to let you know that both 2&4 door Gbody's use the same door hinges up front..