Airbox baffle plate

Hey guys, I've got a 1977 Kz650 custom. I don't have the airbox baffle plate. But I've heard the bike will run better with it on. I can not purchase one, I've looked. At least not for a reasonable price. But I do have access to a 3D printer and can print one off. Does anybody have a 3d model that I could use to 3d print one? Or have a baffle plate that someone could measure up and give me a rough drawing that I can make a 3d model of. As of right now, im not looking at buying one. Maybe in the future. But id prefer to 3d print one because this is a free option for me. I've attached some photos to help identify the piece im looking for. Thanks!