Funny, I ordered a kick harness, buttons and a stick from Spain and I wanted to pay with paypal, but he doesn't accept it. So I sent him a Western Union money order (much more expensive for me), but he didn't go to pick it up because "it was too far from his place". So I had to change the name of the m.o. to his daughter and she picked it and then he send me the things (after more than 3 weeks of delay because of this). And in the meantime I had modded my Dreamcast stick and made another controller and a kick harness from a Saturn pad:
<a href="http://www.neo-geo.com/cgi-local/ultimatebb.cgi?ubb=get_topic&f=5&t=002394" target="_blank">http://www.neo-geo.com/cgi-local/ultimatebb.cgi?ubb=get_topic&f=5&t=002394</a>
So I didn't need my order... Weird, isn't it?
Well, Bob is the best arcade parts dealer for personal collectors like us, I don't know any other else. Contact Briggs, maybe he can do the harness you need.