PowerJam

Hello everyone! I am interested in learning more about 505's as I don't know that much about them. I'm sort of looking for a project car and my uncle has a 505 turbo (86 I think) that has been sitting in a half enclosed shed for at least 20 years. I understand that when the car was parked it ran and drove, and I don't know what caused it to be abandoned. He has been talking about getting rid of it, and I am thinking about the possibility of trying to get it going again and saving it from an unknown fate. My first question is what resources should I call upon if I were to try to get it on the road again? Where can I look for more information about these cars? What are some common problems that these cars have? Where do y'all get parts? I have some mechanical aptitude and would do all the work myself of course, and I am trying to decide if it's something I want to undertake. I live in Oregon and the car was originally purchased in California. Thanks!