Yeah, your best bet is check the UE website for comparison, and you can also see what they're worth.
If I recall, UE offered two suspension options. The Racer X and the EXT control arms.
On a side note, I had the Integy Super Duty Phase II (aka Racer X ripoffs) on my lovely queen.
Believe it or not these things are becoming rare and collectible in their own right. That's why I kept mine.
Racer X front top view left, Integy front top view on the right.
Notice the Integy (knucklehead ripoff) shock tower on the right.
Racer X lower rears on the top, Integy lower rears on the bottom
Racer X rears top view, left Integy top rears top view, right
Racer X front bottom view, top Integy front bottom view, bottom