Just bought a 2003 jekyll 500, looking to replace the handlebars. Does anyone know anything about the stem size?

Diameter of handlebar clamp would be good for starters, also, length, and stem angle would be helpful. (I think its a 130mm length and 10 degree angle, but not sure).

Also, do people ever run riser handlebars with a 10 degree stem for XC, or is this overkill.

thanks for the help,