When I first saw the picture in that link, I thought someone at Trust must have stuffed up the design. Unlikely. But looking into it further it would seam to me that someone stuffed up at rhdjapan and posted the wrong picture. More likely.

See the proper website here:

Their roll centre adjuster for AE86 is the traditional spacer as we know them.

The picture in the first link is for Nissans and other stuff. And if you did use that style of lengthened joint, you would probably also have to use these: (depending on model)