I know nothing about pre 92 hondas, but my friend needs to replace the A/C compressor on his 91 Si CRX that has a ZC swap, he said he thinks he needs a 91-93 integra compressor, I have no idea, and imagined it would still use a d series mount? Any help would be great.

 

just get one from a d-series motor, 90-93 integras are b-series

 

you can use ef compressors..i have my Si compressor on my 2cam ZC