Can a stereo head be installed under the seat/has anyone done this?

Something I want to do with my duster, hopefully over this winter, is install a stereo system, but I want to hide it as much as possible (and still keep the cost down as much as possible too). It seems like the only place I can hide the head without springing for one of those glove box mounts or something, is under the seat. Has anyone tried this before? How did you do it and how did it turn out?