Where can I get brush stroke caligraphy fonts for traditional characters?
You can try searching a site like http://www.fonts.net.cn/ with queries such as 繁行.
Unfortunately, a lot of these just map simplified code points to traditional glyphs and don't even contain mappings for the corresponding traditional code points. But it looks like at least some of them work with traditional code points, such as 王漢宗中行書繁.