I just had my seats redone. I went with satin stainless grommets. The brass tarnish and you can't shine them up without getting the cleaner on the leather makes a mess..
Very happy with the stainless over ther brass.
As you can see on this earlier thread of my friends GT40, the "66 Road car", not all the originals had the grommets. Yes it isn't a racer, but still an original and worth almost as much. Theseseats are basicly foamcovered seats. Easily removed(just pull out) and very light.