In Oz they used either an LT95, LT95A or LT85, not R380, however, a few folks have modded an R380 bellhousing with good results. Over the past year, I have been fixing the UK bodged adaptation of a V8 spec LT95 to 4BD1T. The proper factory bits are now in place to mate a LT95A to 4BD1T. All of the bits are available, some in the US, most is Oz. Spendy but available. While the rover Tdi (200 or 300) is all fine and good, I'm quite chuffed with the 4BD1T.
p.s. my old bits are for sale cheap if anyone wants them (Flywheel housing, bodged LT95 bellhousing, matching flywheel...).