Ya got a bad link there. However if you are using the default UnitFrames, you can get a mod called
AAdapt - Almost-Default Animated Portraits that will give you 3d animated portraits.
Most UnitFrames mods will give you the option of displaying 3d animated portraits. These mods include:
Pitbull
ag_UnitFrames
Nurfed
Perl Classic
X-Perl
Some other mods can use the the Adapt portraits. Discord Unit Frames is one of these.
If you are looking for full body animated 3d models or resizable 3d portraits then look at
ZuxanaModelCitizen (packaged with ZMobDB Advanced)
ZMC can be used to replace the portrait included with some of the UnitFrame mods I listed above, you just need to disable the mod's built in portraits.