vibration problem

I had the car on jack stands tonight and ran it and the vibration is there. I'm assuming it to be the drive shaft, but am going to leave it for now. I am exchanging the A727 for an A518 (which I already have) later in the year and will probably buy a new aftermarket drive shaft too. Any advice on brand of drive shaft? Remember, this is a turbocharged car so it will need to be strong.