i was driving about 80 mph an all of a sudden im leaning forward, and i look at my speedometer and im doing 65mph. i get to about 75 mph and this noise started it sounded like metal was rubbing on metal. so i jack up the car and started it and i put it in gear. and let the tires spin and the noise sounds like its comming out of my differentail. but, when im in the car it sounds like its comming from the tranny. so did i blow out the rear end or did i blow out my tranny?