Transmission Noise

The other day, the transmission started making a spinning noise and like a klunck. It only does it when the wheels are spinning whether it be to a stop or going down the road. It does it when I take off and stops when it gets to a higher speed. Then I noticed that when it gets up to about 55, it vibrates really bad and seems very strange. Its not the throwout or the pilot. U-joints seem good. Rear end is fine. I was just wondering if anyone has ever had these problems with the SVO T5. It kind of sound like its coming from the bellhousing like from the little tabs that stick out on the pressure plate. It sound like one of those is hitting something. Thanks for any info.

I think I found out what it is. I switched trannies and I noticed a little play in the center of the clutch disc along with the bearing inside of the hole. It sounded similar. It was with the wheel speed. Really noisy in first through fourth and very little in fifth. It also vibrated a lot too. But with the other tranny, the vibration stopped.