I asked about the "Pinnacle Cap" at MMC, I was quoted £750, so I politely declined. Williams do a "Le Mans Filler Cap" for £581; I might be tempted but, so far, have had no issues with the present cap. It seems like slightly excessive to pay that just for aesthetics.
I agree they are expensive, but I paid less than the 750 GBP, my dealer did the installation for free, as I had also the Nitrons fitted. But I did not pay more in Euro's than you in GBP. Apart from the money, the main reason to do it was not aesthetics but the practicality. The nice looks are a bonus. I think my dealer made me a good offer!
