Quote:
Originally Posted by TKCR
The difference with the 67-68, is the seat back foam, from what I remember. It takes a sheet of foam for the back. The seat bottom foam is the same up to 1972.
Now the cover, the 67-68 does not use hog rings like the later seat covers do. They use barrel clips. I’m not sure if that’s what they are actually called, but they are different, not hog rings.
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While well intentioned, this info is not totally correct.
The lower foam is thinner on the earlier seats. If you attempt to use a later foam, if the cover can fit, you will sit about 2 inches higher when you are done.
The 67-68 seat back is a bit of material (burlap/jute) and foam sheet. The seats are constructed more like a coil spring mattress than an automotive seat. You need to protect the foam from the coils, or it will disintegrate.
The OEM cover does attach with clips on the front, but I've never seen an aftermarket cover that did this. If you end up using hog rings, you will need to be creative in how you clip to the frame in the front. If I had to guess why they went to hog rings, it was to make the cover more form-fitting and look better.