if i remember right seth (twisted minis) made his own so just ask him. i thought he made an article about or a sticky or something, but i can't find it.
Check this guy out. http://stores.ebay.com/English-Wheeling-Machines
My girl got me the Harbor Freight english wheel and I'm pretty impressed at the structure and how well its built compared to their other stuff. I'm planning on getting some better anvils from the link above but havent needed them yet. I'm still learning how to use it!