I really like the engine guard/highway bars on my 78 CB750K, but they are pretty rusty. I've found several new on the internet, including one that says fits 77 only. It was my understanding that 77 and 78 were near identical, and realyl, unless the engine case, frame or exhaust position changed, I would think that most would be the same. At around $100, I think it would be cheaper to replace than to rechrome. They all look about the same, it's hard to tell, even with a good picture. Anyone with more experience than me, your opinion would be appreciated. Thanks in advance.