I'll quote you a couple pieces from the above:

Quote Originally Posted by Greg Amy View Post
You need to be more specific if you're looking for a reasonable opinion.

IMO, you can swap parts freely within a model of car.
Quote Originally Posted by Greg Amy View Post
The Type R chassis is allowed in STL but it's not a Civic. IMO, putting Integra parts on a Civic is non-compliant to the regs.
...
In my opinion, and it's just one club member's opinion and is no way an official one, it's safe to swap parts within the same manufacturer chassis codes (EG, DC, EF, etc).