i never paid much attention, but always assumed that the two side markers on the 550 were just reflectors. i was poking through the parts manual today and lo and behold, they are not - they are powered lights. y'learn somethin' new every day! i always swapped clear side markers (white/clear lens with a colored bulb) on my 911s and very much preferred the look. can one get parts to effect this change on the four lights in question on a 550? do the non-NA cars come this way like the euro-911s? tia, doody.