I have a 97 Impreza wagon.

When you change the bulb for the parking light and have to take out the corner light, do you have to first take out the headlights?

What years have the same headlights and corner lights if I need to replace them?

What years have the same size front bumper (that has the big holes for the fog lights)?

What are the average prices for the:
Headlights?
Corner lights?
Front Bumper?
Fog Lights?
Arm Rest?

Where might be a good place to look for these items?

Any information or suggestion would be appreciated.