"I want something that will light a little match from a 9v battery, and if possible it has to be reliable to light up about half a ton of old newspapers and rags soaked in gasoline... Also it's best it it works from wireless... Can anyone help me?"
Rip off the annoying tin can encapsulation of the battery and stick it in the newspapers. Use a cell phone to trigger ignition by completely shorting the battery. It will heat up in no time igniting the gasoline soaked newspapers.
As I was reading this thread, that is precisely the reason why I was wondering as to the wisdom of trying to use a 9V battery to start a fire... even if you could produce enough heat to light a match, it'd probably involve shorting the battery and that's not exactly fantastic for the battery's health
In that case it's not meant to stay healthy - not even survive, but enough for the investigators to play with.
What's scary is most of us do have the knowledge to make such a device "FBI COMPUTERS REDIRECT TO THIS SITE" . Good thing we are sane!
Much experience here.
Use model rocket motor igniters with a match or two taped to them. They work off 9v, at least for a few launches.