In the USA, none. There are no USA Tuscani's.
Tuscani's are unique to Canada and Korea.
The Canadian Tuscani can be read up on here.
http://www.canadiandriver.com/roadte...ib_tuscani.htm
The Korean Tuscani is similar in specs.
The previous version in Canada was the GS-R
http://www.canadiandriver.com/testdrives/03tiburon.htm
Anything specific you were/are looking for?