Can anyone tell me is there a differance in either or all of the following from the 1999 model Grand Vitara v's the 1999 model Tracker:
Control Arms
Hub assembley
Rotors
Callipers.
CV's & shafts.

I am trying to find a way of getting 15"x 8" Steel rims onto my 99 GV LWB and I was thinking about different profile rotors and callipers.
I have tried to fit rotors & callipers from a 96 SWB Vitara (I think you may call it something different)with no success and as we dont have the Tracker here in Ausralia I thought I might ask here.

Is it possable to get the 15"s on or should I just give up and go with the 16"s?

I have a 2" body lift and a 3" suspension lift including coil spacers so I want the 15" rims to be able to put 31" tyres but if I have to stick with the 16"rims, can I go a 16"x8" and what size tyre will I be able to get on.

Hope someone can help me!!!!

I was told that 15" rims will work with a 1" wheel spacer...otherwise try finding a 235/85R16 tire; Tall and skinny, it's perfect for these little rigs.

otherwise try finding a 235/85R16 tire; Tall and skinny, it's perfect for these little rigs.

X2
There's no trying, most tire shops will have these!  My new winter tires are 215/85/16, which is a 30.5"x8.5"
My problem is finding a set of steel 16" GV wheels 

I have 15"s on my GV. 1" wheel spacer and some light grinding on the calipers. Now what wheels are u thinking of using?

I dont have a brand in mind, I am just looking for the right profile and offset and a brand that comes in black. do you have some pics you can show me and did you need longer studs with your wheel spacers?

My problem is finding a set of steel 16" GV wheels 

I got my steelies cheap from a Zook dealer as take-offs from upgrades.  Since it's been years, I'm not sure if any dealers still have them kicking around.