Hi, I suppose that you speak spanish cause of your name "Juan" and your english... but for the moment im going to reply you in english, although I can reply you in spanish ^^
The image that you post saying that are Mexican Cazador it's not a Mexican Cazador, it's a Spanish Cazador of 1830.
It's a Cristino Light Infantry unit, so it's from Spanish First Carlist War. I can know it cause of the name in the imagen link (xD) and the plate in the helmet.
Good Luck with the project.