Use your old one. 88-91 are the same.

"Craig" <catcraig74@yahoo.com> wrote in message
news:1113714355.716281.131160@g14g2000cwa.googlegr oups.com...
> We are putting a 1.6 liter zc DOHC engine into a 89 civic hatchback but
> we need to replace the alternator and we can't find which one to put in
> there, does anyone know? PLEASE HELP!!!!!
>