Cabin Fever

Hi, New to motorcycling, and new to the forum! I have been given my Dad's 1982 XS400J, and although it is not perfect, it is basically stock, and looks/runs great. I'll post some pics soon... To finish off the work I have done to it, I am looking for a set of fuel tank emblems... I have been combing eBay, etc., but no luck so far. There is a set for a XJ650 that look identical, and I am wondering if any of you guys know if they would fit... Or maybe is there another way to source these parts? I guess it would be New Old Stock, if there are any out there... Looking forward to hopefully finding a pair, but either way, it's cool to be here on the forum. I plan to keep this bike for the long run, has sentimental value and is a great rider.