Hello everyone i am new to motorcycles and my 1978 cb550. when i bought it about a month ago there was an unappealing front faring and a rear cargo trunk. after removing them i am very pleased with the bike i now have. Unfortunately the headlight and front turn signals were removed and the bike was wired into the front faring. Im now looking for a headlight and im seeing sizes for '75-'77 550's of 6.25" and i measured between the ears of my bracket about 7 3/8". does anyone know if there is a difference between the years? thanks