hey everyone. this is my first post. I was helping my brother move out of his old house and this bike was in the attic. it's a schwinn impact and he gave it to me. what you see is all that I got. I need a seat and the whole rear section. I have tried looking online for this bike but cannot find one like it. can anyone give me some direction and maybe tell me what type of bike I now have? is it good? a bad bike? beginner or expert? thanks in advance everyone.