My 2006 XLR did not come with an internal compass window within the rear view mirror like my other cars. Since there are many times I do not use the Nav system but want a quick reference to the cardinal direction, I added a new mirrior to my XLR. Solution, the 05-12 C6 corvette uses the same mirror as the XLR and has a model with the internal compass window. After researching the cost of a new C6 mirror, I opted to find a good used one on ebay. With the mirror in hand the swap took about 15 minutes and works great and is an easy DIY project. All plug and play and no special tools needed. Enjoy