In that case I would fax these questions in English to the factory in Saitama (+81-48-256-0390) and see if you get a response. Good luck.
Oh and you can order by fax if you know what size bike you want, the order form in Japanese and downloadable form is here. BUT personally I would want to meet or at least talk to my custom frame builder before I dropped a bucket of cash.
http://www.generalworks.com/toeisha/pdf/std_order_sheet.pdf