This may be an old thread, but you are the only one that has confirmed that there are 2 types of 225 v/c gaskets, i have tried all from my 64 to 83, all wrong. Mine has 8 holes, upper 4 point in along with bottom 4 & the 2 corners are not rounded, they have an s curve to them, that's how I describe it. But I can't find them. Do you have a part number at all? Thanks.