no stanza should work fine, 120y is the same as 1200...pretty sure you can even just use 1200 ones instead of stanza as they all use the small tierod end taper

so the tierod end isnt actually threading onto the tierod? if thats the issue then something is not what you think it is, as stanza tierod ends 100% go onto 1200 tie rods and 120y, sunny, 180b, stanza(obviously)

ive used a couple of different combos in mine
1200 inner rod end, 1200 tie rod, stanza outer rod end
1200 inner, stanza tie rod, stanza outer
1200, 180b, stanza
1200,180b, 180b (to use with offset 200b steering arms)