Probably best to do a search for "Blitz RC Jazz". Should bring up some good results. RC Mushroom might be a good start.
EDIT: Just remembered you're in the US. If you have a local shop that sells Serpent, Arc or Novarossi, see what they can do. They use the same distributor,
Desoto Racing. They're the US link for Team Titan. They don't list the Blitz bodies on their site, but of they can get everything else, these shouldn't be an issue.