Damn, good question. This will be an in complete answer, but I know Whiteline fit the same upper trailing arms to the TA22 and a bunch of Celicas of the same vintage. To the 86 as well as a bunch of other RWD Corollas. So I guess you should be able to get them fitted.
The Whiteline site only has part of the story, call them up at their Minto plant (main factory). There is always someone there who knows, I have found.