Nuendo 1.x plugins in Cubase 5??

Hi all,
Does anyone know how I could use Nuendo 1.x specific plugins in Cubase 5?

Years ago I tried some of them and I really like the jet flange plugin. However I have found no way to actually get Cubase 5 to open up the jetflange plugin.

I have even tried moving the jetflange.dll into the vst folder and it doesn’t recognize it.

Is there a place where we can buy these older nuendo plugins for general vst use?