Hi Scott, I know this is an old thread, but I also have a XJR (x308) with a new black paint job and my coachlines are now gone 😞 Really need to restore this since I love the lines on the side of the car.
Any chance you remember where you bought the coachlines ? - I have no dimensions and I can definitely "live" with the same result as your, which looks great.
Hope you can advise me here - thanks
br/Flemming, Denmark