In Oblivion, many races have differing heights. For example, high elves are taller than other elves, and the wood elves are the shortest. I found a mod on Nexus that could be implemented into Skyblivion. Under the files tab, it's the one titled Height Adjusted Races - Oblivion Lore Heights.
http://www.nexusmods.com/skyrim/mods/7587/?tab=2&navtag=http%3A%2F%2Fwww.nexusmods.com%2Fskyrim%2Fajax%2Fmodfiles%2F%3Fid%3D7587&pUp=1

Vanilla Skyrim has race
Vanilla Skyrim has race heights, seems odd to try and add something that's already there.
I think whoever made that mod either didn't think the height differences were noticeable enough, or misunderstood how character heights in Skyrim work.
http://elderscrolls.wikia.com/wiki/Races_(Skyrim)#Stats_affected_by_character_size
"Without console command modification, the damage output, damage resistance, jump height, run speed, weapon reach, etc., for all races remains at a scale of 1.00, with the race specific scales being purely cosmetic only. Race specific scales can be found in the brackets when the getscale command is used on the player or an NPC. This means that all stats for all races are identical, without console command modification of the saved game profile."
"Using the console command
player.setscaleto change the height of the character will increase the size of a character in addition to increasing their movement speed, jump height, and damage output."List with in-game heights: http://www.uesp.net/wiki/Skyrim:Races