New Mazda owner. 2006 6 3.0. Got the car really cheap. Engine had been changed just not finished. I fired it up and itís making a hell of a noise and wonít move. Suspect converter bolts not installed. The guy I got it form wonít respond to me. How do I access these? I really canít believe the starter hole is the only way. If so how in the world is this possible. Any help would be great. Thanks.