I bought the Vibratechnics "race" ones 2-3 years ago, and must say its fit and forget. Hadn't troubles myself with them, but when I removed the one under the inlet manifold, it was not a mount, but a 2 parts mount as it had brocken, but was lucky not to damage anything.

Of course now the car vibrates more, but at least I can sleep well, I can drive "hard" without having to wonder "will the engine mounts hold these corners ?".

I changed also the gearbox one, heard it was the GB mount who was making all these vibrations.