HEY GUYS GREAT SITE FOR A MB ENTHUSIST. I JUST GOT MY FIRST MERCEDES.....A GREY MARKET 500 SEC.I HAVE LOVED THE STYLE SINCE 1ST SIGHT. MY QUESTOIN IS HAS ANYONE EVER SEEN OR HAS A GLASS ROOF . AND IS SO WHERE CAN I GET ONE?HOW MUCH? AND HOW LONG IS THE JOB?