Alright, I'm not sure if this is possible, but I would like to add a tremolo bar to my ESP LTD F-2005. It has a Tune-o-matic bridge, and the string through body design. I really don't know what is involved with changing the bridge, or much about the different types of bridges, so feel free to n00b slap me if I've got my head in the clouds here.
You'll have to have the body routed for the trem. You may also end up needing a refinish.
get a stetsbar if you want something easy. TOM guitars have a neck angle that is usually too great for a tremolo, but you can possible put in a FR if you raise the back end.