well, a 201 has about 8.5 inches. There are many vintage industrial machines hitting Craigslist, and some of them have larger harps... I was going to direct you to WOW, but they charge about 2000 bucks to stretch your machine.
so, I think if you don't want a 201(BEST machine EVER IMHO), then consider something like this:
http://norfolk.craigslist.org/hsh/3809818741.html