but are the splines the same? size/number of splines?

From what I've gathered, yes.

The rears are where things changed as far as I can tell.

so then, mabye this locker fit's my car? http://www.trailtough.com/sidekick.htm

but is this a lockright type of diff? how is it to use in a car that is mainly used on-road?

it's got to be hard on the axels?

and, doesn't it sound better to have a lsd in front and a lockright in the rear?

Personally I feel that limited slips are a waste.  Save your money for an ARB.

Yes, a locker is harder on driveline components than a limited slip or an open diff.  However it gains you so much more traction.  Limited slips are so limited in their capabilities offroad they're nearly worthless.

I'd bet Trail Tough's modified Lock Right would work fine, yes.

My ideal setup for a daily driver is a locker or spool in the rear axle and an open diff in the front.  If I had all kinds of money (I don't) there'd be selectable lockers front and rear.

Hi,

As fas as i know, its possible to put  LSD at frond of a Vitara or GV, but they must have 26 spline axles.
As i know all the frond diffs have 10 bolt rings and Calmini sales an LSD for 10 bolt rings, so i think that there will be no problem.
My GV is a '03, 5,12's and 26 spline axles.
I recently changed the frond aloum diff housing and third to a steel one from V6.
A friend i have here, used to have a frond LSD in his Vitara with no problem at all.
I also believe that the trailtough frond locker will be ok for a GV too, but u must upgrade your housing and third if u want them to last longer.

A very good option will be 2 ARB's but i,m afraid of the instalation, especially for the frond diff.

I don't know for sure if Trailtough's locker would work in our GV. I can't see why not, seeing that many people using sidekicks use the GV housings.
For a DD, an autolocker like that one could be used with freewheeling hubs. That way, on road it would be as if it wasn't there . For the rear an autolocker would be nice too, but I see it doesn't work .

The problem with any full time traction adder (limited slip, locker, spool, welded, etc) up front is that if you live in a climate (snow, ice, slush, etc) where you might need to run 4x4 up front it can get interesting while trying to steer and use 4x4.  That's why I won't put one in the front of my trucks.  I don't wheel hard enough to need a front locker and I drive too much to deal with the penalties of it.

i have also thougt about that problem, (snow & ice)

mabye it's best to leave it and save for a ARB...

My solution for the GV will either be waiting for someone to make/adapt a locker that fits or switch to a different yet similar strength axle.  A Ford 9" appeals to me.

mabye it's easyest to get a toyota for winter use, my mother bougt a new '06 hi-lux -great car!


but i really like my little suzuki TD!

Yeah sure, got $25,000 US?

i live in Norway, prices run a little higer here :'(

and you are not allowed to modify your car as you want 

That sucks.  It varies here from place to place.  There's always rules on mods but in some places they are simply rules for safety and in others they're super draconian stupid laws written by people that didn't know what they were doing.

My solution for the GV will either be waiting for someone to make/adapt a locker that fits or switch to a different yet similar strength axle.  A Ford 9" appeals to me.

For the rear you can put a sidekick 3rd on it and put lsd, locker, or an ARB.  This also opens up the door for gears 

George

Late '03 up use a different rear axle than the earlier GV's which used the same rear as Kicks/Tracks.  However it's still different than the XL7 diff.  Don't know what the difference is but every place with a locker that fits the early ones says it's different and won't work.