Seems to me I remember there being a difference in the catch in the hood. I think the 8-9 had a steeper angle from one side of the hole to the other. The 7 catch was more flat. Think I have a couple different ones from old hoods that I scrapped. A friend that I bought my 67 hood from had it on his 68. I asked him if it fit. He said it seemed to but he kept a chain on it anyway.
