Don't get too excited about the 67-68 NOS GM fenders. Every pair I've used has required a lot of work. I compared my NOS GM fenders to DII and Goodmark fenders this past summer and can say that the DII fenders had the crispest lines BY FAR. Can't comment on fit. I've been told that Goodmark recently released a new stamping that is much better than their old stamping (which I was undoubtedly comparing to). Beware of which stamping run you're getting if you go Goodmark.