Well, went out this morning to try and tune the car a little to the headers. Reached the top of first gear and oil light flickered and the engine shook with violence. I got out of the gas real quick and went to neutral. let it idle and the engine was bangin' hard on the bottom end. I limped home. engine shook like it was off balanced. Oil light stayed on when I got home and the knocking of the bottom end was loud. I'm sure I spun a main bearing.