Update.

Got the stanza struts in. As datsic said they give about a 2" lift and sh!tloads of positive camber. no good.

the problem: 1200 struts are 615mm from hat to control arm, stanza & 120y are both 660mm, so you have 45mm to make up. When you combine this with with the stiffer stanza springs it blows out further.

I replaced the stanza springs (400mm free length, 11 coils) with the 1200 springs 325mm free length, 9 coils. this gave an approximately standard ride height.

I then cut down the stanza springs to 320mm (which is the shortest you can go on them and still maintain some pre load) and got a ride height that was a bit lower ( I have yet to measure it, but 2 1/2 to 3 finger gap between tyre and guard instead of 4-5 finger as standard.

All measurements were done using the stock rims. (brake calipers were not on the struts at the time)

I am concerned about bump clearance for this conversion. You are supposed to maintain 2/3 of original bump, so to keep this conversion legal, I suspect you would have to keep a stock ride height.