When I picked up my project 78 GL1000, all covers and many parts were off the bike and in two boxes. I did a quick inventory of the boxed parts and verified 2 side covers were there. Now that I'm at a point of putting covers back on, I discover what I though was left and right side covers turned out to be 2 right covers. So I have been looking on e-bay for a left cover with no luck yet. Will a 75 - 77 cover fit, or must I limit my search to 78?