I fitted a full set of these to all the wishbones on my wifes Elise last October. They are extremely well made and the internal bore of the bush was crosshatched to help retain the special grease. To fit them was easy, you simply push the PU bush into the eye, grease the inside of the bush and then press the stainless sleeve in (actually pressing the sleeve in is a bit fiddly and requires a reasonable amount of finger pressure, use gloves or you get sore fingers). Think I paid about £110 but that was for an Elise - 16 bushes. On the road the car feels more taut and responsive and noise levels are the same. Good product.