What is the width you require flange to flange?

Going to contact a couple members here but I'm looking at putting a h190 rear end Into the stanza. I'm trying to find an elusive s12 gazzlle rear diff but otherwise who could chop off the mounts from a stanza diff and weld onto the h190 to get accurate pinion angles etc.

I found a bluebird rear disk diff otherwise drum gazelle will do. Looking to go lsd at a later date when fund's become available.