HH56 wrote:
The flocking fibers found today are much finer in texture than the rayon fibers Packard used. About as good as you can find will be nylon fibers which are coarser than todays rayon but still nowhere as large as the originals.

There were apparently different color blends used over the years. Pre 51 seems to have been more brown shades while 51 on seemed to go grayer. You can try to match your car by getting a few different base colors from Flock It and mix the blend yourself.

The finish will be quite presentable and better than bare metal or just the sound deadener but any new application will still be noticeable if you have any of the old flock visible.