1200rallycar has this to say about the Stanza strut swap

I installed stanza struts to give me 9.5" discs with huge pad area (single piston though) and also to permit putting wider wheels (14*5.5" maybe 6" can fit not sure) the struts are a straight swap if you use the following components use the stanza struts and stub axle, 1200 springs and top-plate things, stanza lower control arms, 120y castor rods and 1200 tie rods. all ya gotta do is swap everything over and i think when you put the stanza struts in you reverse the sides they came from but its pretty obvious which one goes on which side when you go to put em on anyway. If you want a stiff front end too change over the oil in the stanza shockers to 20W-50 motor oil (ive done and it works a treat, no body roll) There is 250ml oil in these struts. I am quite happy with the brakes as theyll pull me up instantly without change to master and no booster used. As added bonus stanza struts installed like this give about 1 degree negative camber.

The stanza springs can be used in this install but would need to be cut down (legalities involved) and the holes where the strut mounts to the tower need to be bored and elongated out so you can use the stanza top plate, though these springs will be stiffer and its possible to lift the front of you car a little for more squat on launch.

There is two stanza struts one has a three bolt ball joint the other has a four bolt, you need the one with the four bolt, also there is notable diffrence between calipers, the four bolt has big girlocks, the three has small calipers similar to the 1200. (i think the change between struts occurs in 1980)