Front Turn Signal/Park Light Bulb Socket Rusted

One of my favorite things when I start my Dart on a cold dark morning is to turn the park lights on and walk around her checking lights, what a cool sight! I have a right front amber 1157 park light out, turn signal works. I buy new bulbs and find the old bulb rusted into the socket, will not budge! I mean the base of the bulb and the socket have become "one"! The left side is fine? Strange, eh? Is there a vender that sells that socket/wiring assembly? Thanks in advance!

Mike