Peter Burgess who follows this website has his own business in engine performance tuning. He specialises in MGs etc (Leyland Series Engines) however his business includes a Rolling Road on which you can pay to have your performance measured.
I was sent this a long time ago but only came to look at again today, thanks to Simon for finding it.
I have put together an information sheet on the different Transfer Box and Differential ratios that are shipped as standard on Jimny's.
If you look on the forums there is a bit of discussion about whether springs are "handed". The following information is from the manual....