Hey Dude...check out hasport.com's website...I dunno crap about axles, but they say something about modifying 90-93 Integra axles, or using 90-93 inner joints, with two right-hand outer axles from a Civic..i guess you take apart the inner CV joint and slap a Civic outer onto the Integra inners??
Your other option is to go with an Si tranny and then you can use regular ol' Civic axles. If you already knew all this, sorry
ZCSpeed.com says this:
Which Axles Do I use on the ZC tranny?
"Many people have reported using 90-93 integra axles with no problems, however, ZCspeed recommends a 90-93 integra left axle with a 1985 Honda Accord SE-i 5spd Right axle. The Accord axle is one-half inch longer than the integra axle, eliminating problems with the axle coming apart when the wheel is turned all the way to the right. The accord axle isn't very easy to find, but we get them from time to time. Some people have reported making custom axles with various civic/integra parts. Do your research!! "
So - I dunno...sorry I can't help you more, that is what I could find quickly.