Maybe DMF fail? Seems to be harder to pull off, have to rev more to get it moving and i get a horrible vibration while its engaging and under load. This is with the handbrake on and engaging the clutch a little while in gear. It really is that loud, the vibration is quite bad and it sounds rough when under load.  http://www.youtube.com/watch?v=2E83_kxzaaI&feature=youtu.be

http://www.youtube.com/watch?v=_b3hCQPq8QI&feature=youtu.be

Another video of me pulling out of a juction, my car is quite loud because of a cone filter. But you can hear the vibrating and also big clunks when the accelerator is pressed. 

This was mine when my DMF was failing.

 

http://www.youtube.com/watch?v=XzDdsKlSr0k

 

If you look at my other vids I have one of it running for a while too.

Have you had the dogbone mount polybushed? A mate of mine has and its ****ing horrible. Feels like its going to break something with how hard it vibrates

Nope, but i guess its a good place to start looking. Cheers