I have been chasing a lower diff ratio in my 1999 van and think that the 4wd Ignis rear diff may be compatible.
In Oz we got them as the Holden Cruze...
Suzuki Ignis - Wikipedia, the free encyclopedia
The diff ratios are
Holden Cruze AWD manual Final drive ratio std: 4.105
Holden Cruze AWD automatic Final drive ratio std: 4.361
Carry Truck Final drive ratio std: 4.555
Carry Van Final drive ratio std: 4.3
Holden Cruze Rear track: 1405 mm / 55.3 in
Carry Van Rear track: 1290 mm / 50.8 in
I would like to put the AWD manual centre into my van.
Problem is that there is none to be found in my area so I will have to buy one in.
If anybody gets the chance to do a comparison, please let me know what you find.