Yeah, that's right, it was a Toyota 1JZ-GTE 2.0 DOHC 24v EFI twin turbo straight-six that was fitted to my neighbour's 728i.
The car's interior and exterior are in good condition ("daily driver" condition rather than concours). My neighbour and his family seem to love and enjoy their Japanised 728i, leaving their W126 Merc 300SE to collect dust.