I'm pretty sure it was discussed numerous times here in the past that the ARB RD110 will fit in a Gen I V6 front end and that the application guide from ARB is referencing OZ models and not US models. I've got one in the front of my 88 2.6, but I got the diff from a V6 M/T rig.

?_________
|_|_|\____\___
l-----[O]≡≡≡≡[O]
()_)()_)-----)_)

Stay the Trail!