There seems to be two different textures for the Volkihar vampires. Is it possible for the player to get the beast version if he's playing as a nord?
I tried using 'showracemenu' which gives the player 2 possible eye textures if vampire (beast/human) but those settings don't save after reloading the game.

One for beast races
http://www.freeimagehosting.net/8fua4

And one for human races
http://www.freeimagehosting.net/pqnc2

However, Harkon is a nord and he has the beast version
http://images3.wikia.nocookie.net/__cb20120803235359/elderscrolls/images/1/17/Harkonfull.png

So, is there any way I can give my nord the beast vampire eyes/harkon's?

You could, in the CK, point the TextureSet property elsweyr wherever the instance(s) of http://www.creationkit.com/SetEyeTexture_-_Actor arise. Haven't tried it, but it ought to work.

Thanks, but I don't even have the CK so I have no idea what to do. So the way I see it, it does work?

There's probably a block of code which checks the player's race, then applies the appropriate eye texture. You'd have an easier time waiting until the Dawnguard PSCs (script source files) are available, but you could still redirect the properties.

Alright, thanks for the help.