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So a while ago, i was getting pretty bad engine rocking (sounded like the engine was going to drop out whenever the wheels spun up), and combined with my inexperience with how NVH works, i had the large rubber bush on the dogbone mount replaced with a poly one, the original had split and was allowing almost free movement back and forth. This was a huge hassle as the mount was damn near impossible to install with the new bush in place. Eventually i got it in. Instantly, huge vibrations at idle and below 2k rpm, but by heck the gear changes became absolutely beautiful and buttery smooth! Over time the mount bedded in and suchlike, it almost completely eliminated the wheel hop banging, now it just shuddered when the wheels slipped. I then noticed a slight split in the gearbox mount (the famous one known to squeak or fail), and replaced that with an OEM one designed for diesels, wheel hop completely gone! The wheels just slip and screech. The new gearbox mount also very slightly reduced the amount of vibrations that were going through the car, but after some time, i was given an OEM dogbone mount which like the replacement gearbox one, was designed for diesels. I fitted it... No wheel hop... No banging like the engine would fall out... and best of all... absolutely NO vibrations at idle! Clutch and gear changes are ever so slightly odd feeling, but i guess they will until i get used to it again, nowhere near as bad as original though. I have a feeling this was caused by the fact the bush is so large it was clamped too much by the subframe, restricting its movement too much. Below is a picture of the mount in question. The original black bracket must be used as the one for the diesels is slightly different. TLDR,; Don't put poly bushes in the dog-bone mount! Instead replace the gearbox mount and the dog-bone mount with the diesel counterparts; Diesel Gearbox Mount: 6Q0 199 555 AS (AR is original petrol one) Diesel Dog-bone Mount: 6Q0 199 851 AP (AS is original petrol one)