Track frames are widely available - but not instantly available. The builder want to measure you and build a frame to your specs - so don't expect to walk into a shop, buy a frame and walk out. That said, you might get lucky. Cherubim in Tokyo has a few frames hanging around sometimes, as does Kalavinka.

However, south of Kobe the people building frames are Giro and Lightning, and not far away, in Osaka, is Panasonic and Nakagawa. It would be worth contacting Nakagawa to see if they have a frame for sale.

You can expect to pay about $1,000. A good place to check out prices is the Kalavinka website.

Nakagawa: http://www.nakagawa-cw.co.jp/cgi-bin...ge3&category=1

Panasonic: http://www.panabyc.co.jp/products/pos/index.html

Cherubim: http://www2u.biglobe.ne.jp/~cherubim/

Kalavinka: http://www.kalavinka-bikes.com/

(Also, in Kobe is Japan's number one parts importer and distributer http://www.trisports.jp/ - they might know of some good places to find a track frame, such as an Anchor)