Is your car a 4th or 5th gen?
Their is no SIR for the 4th gen the closest is SRV or SRS
If you have a 5th gen SIR it would have a BB6 Chassis code instead of the BB2 Chassis code.
BB2 is for the 92-96 Prelude with Si, SE, SR, SRS preludes.
Hope that answers your question