The H55 is not a direct bolt in to a 1fz, I beleive it is a H151. I would look on mud in the 80 series section to find out for sure. Blojet is doing a new taco 6 speed to 1fz for his winter hipo project. he says he love it and get around 20+miles to the gallon currently. Check out his posts.
As for fitting in a 40, length should be ok, but you will have lots to do. The computer for the 96 is a combi that includes the tranny with it, you would need to source a auzzie other countries computer for the 96 engine with no auto tranny. Nothing that can not be handled with some research and planing ahead. later robbie