Basically ebay is your only friend. Almost none of the shops have honda's bodyshells. Well, there is S2000 which is still in production. But, for ex. HPI made a Civic EJ (coupe 6gen) which is very very old school, and it's really hard to get one. If you're looking for an EG civic hatchback, Tamiya makes one, and still sells it. ABC Hobby makes EK civic type r and Integra type r bodyshells which are really detailed and very good quality lexan and you can find it in any shop which sells rc drift stuff (banzaihobby.com ;
www.rc-race-and-drift-japan.com )