Need spare parts

Hi. Is there anyone that can help me wit finding a spare part in Chevrolet Monte Carlo ´86. Engine 305 - 5000. I need an Automatic transmission trachea (cable). It rips apart when my son was parking the car. It seams to be no one in Iceland with the spare part for the Monte Carlo or not interested in providing one. Thanks you if anyone can help me with a web page where I can get help with this transmission control cable problem.