This is probably not happenin, but I am assuming the engine cases on a 1981 gl555 are the same as a 1982? I have a very sweet '82 GL500, which I ran over an object on freeway. It flung up under engine and broke my case. Problem is (one of many), if I read correctly, you are in Minnesota? I think just the cost to ship (plus your bother to make shippable), would be more cost than I am ready to delve into. I would sure love to find such in Phx., AZ!