I had the NVH kit fitted to my car last week at the factory and talking to the guys there, the estimate of 12 hours is much closer than the 2 hours quoted. It is a fairly extensive modification and requires some extra brackets welding to the chassis under the bevel gearbox. The £395+VAT quoted is a bit of a bargain when you see what is involved. The extra metal added must put another 10Kg onto the already overweight car, it's not "Lotus" engineering. The first photo shows the large beam that goes under the propshaft between the gearbox and bevel box and is mounted on rubber isolators. The second photo is of the bracket that goes under the bevel box. On the bonus side it does isolate a lot of the noise and vibrations and smooth things considerably, I can see things in my rear view mirrors (sometimes) and hear the engine rather than just the screeching bevel gearbox.
