Can't help you there, I don't know enough about that. If I had to get a KAAZ LSD though I would buy locally. If your axles have the wrong spline count etc...then you will have to chase up new parts. So best to buy local from someone that knows and you can return easily if they supply an LSD that doesn't fit.

Or contact kaaz directly and find out.

My 91 turbo was non lsd.  Have you considered a Quaife?

track_mr2
Well its the US for starters so probably listing USDM MR2's but basically saying all turbo MR2's had LSD's. I'm not sure if this is the case or not, you got a turbo with no LSD? Seems odd that the turbo would come without one?

Yeah all early model 3sgte's (1989 - 1991) came from factory without LSD as standard.  In saying that is was also a factory option to have LSD installed. (stamped on vin plate shown by a number after E153)
LSD's were fitted as standard from factory from late 1992 thru all 3sgte's mr2 models.  

I have the Kaaz 1.5way in my 89 turbo. My car originally had an open diff. You don't need to buy new axles.
 
You need these factory parts to install it (I think they are Rev3 onwards parts):
Speed Meter Drive Gear 33481-12100
Ring 90520-99011
Diff. Bolt 90105-12150 (you need 16 of these)
 

Any feedback dvst8r as to the 1.5 way - any noticeable pros n cons in your opinion .... Street or track ....

Mine is just street driven, although not very frequently. I only notice it chattering a little bit when I go around a really tight corner, like 1st gear hairpins. Apart from that I never notice anything, but then I'm probably never really driving hard enough these days to ever need it.

TonyMR2
Any feedback dvst8r as to the 1.5 way - any noticeable pros n cons in your opinion .... Street or track ....

Unless you frequently do track days it is not worth it.

Mine knocks when applying power around tight corners and car parks. its also hard to get the oil mixture right.

For a street driven car the benefits are marginal at best unless you are making a very substantial amount of power. Even still it just makes daily driving that little bit more frustrating at times 

I have a KAAZ 1.5 in mine -- chatters grings knocks at slow 1st gear hairpins - otherwise I dont hear it
 
Only really felt it working once on a exit to a right hand corner - seemed to really dig in and sling shot the car out of the corner
 
other than that i wouldnt know its there

Did you guys buy your kaaz ones from kaaz or elsewhere ?? I'm still a bit worried about the part listing for the 89-91 models as being for a stock 'viscous' by kaaz which is incorrect. Guess I might have to go through a local supplier in the end to make sure I can return it in the event it doesn't fit .