For a mere $69.97 one can aquire a sweet looking Radiation Detector from Sports Man’s Guide. Not really sure why anyone would want to gut something like that, but for the art of circuit bending and synth making nothing is off limits.
http://www.sportsmansguide.com/cb/cb.asp?a=51259

*Update * The detector is still available as of 2/21/2007! The price dropped to $59.97, good bargain.