Where can i go to get some of the metal pieces that are on top of the door? Mine are rusted really bad and id like to replace them to make the car look cleaner. Its for a 88 SE

 

You can get new door stills from mazda, the new ones are plastic and wont rust. They cost about $60 a piece though. I dont know if it was worth it, but I'm much happier with the new ones.

Another popular option is to sand them and paint them with Plasti Dip.

 

What do you do with the rubber shielding that is supposed to prevent rain leaking down the windows?