If you're looking for a cloth covered like the original I used YNZ. The cloth covered kits are expensive. You can get a modern harness from several different vendors. I've not used one so I can't speak about the quality or ease of installation. I did use a YNZ kit and loved it.

Save a life, adopt a senior shelter pet.
The three main causes of blindness: Cataracts, Politics, Religion.
Name your dog Naked so you can walk Naked in the park.