I know for certain its a borg warner diff. Do you think it would be worth having someone rebuild the borg warner dropping the ratio to 3.7 or do the slight modification to fit a diff (stanza or bluebird) just to achieve the lower ratio.

I am going to try the G70 in the diff and gb first and hopefully i will get more life out of both of them but the thought of a correct ratio still lingers ide like to marry up the torque of the A15 with the correct ratio or a more suitable ratio.