I hade 350F and 550 seat covers made in Indonesia for a while, including the Honda logo, and sold them for a few years on fleabay. Things went south with my partner there and I stopped bringing them in, but I always thought it would be really easy to just make a stencil of the Honda logo and use the right kind of paint and just DIY. I have a couple seat covers and could copy the logo so the size is right and make a template.