In that case it comes down to features that it has & doesn't have as well as the engine it has. Certain models come with certain things & engines whereas others don't.
As you said it was a sedan that would eliminate it being a CX (hatchback only).
If it has no power steering it may be a DX with manual transmission.
The DX model came with no power locks, power windows, cruise control or sunroof.
The LX (sedan only) model came with power windows, power locks & cruise control
The EX model came with all the above, including sunroof & map lights.
The HX model came with the same features as the LX except cruise control.
As far as the engines
DX, LX - D16Y7
HX - D16Y5
EX - D16Y8
Hope that helps.