http://images4.wikia.nocookie.net/fallout/images//7/7a/Brotherhood.JPG
http://images1.wikia.nocookie.net/fallout/images//4/4a/Powered_armour.jpg
http://www.fallout3.phx.pl/obrazki/render/ft_power%20armor03.jpg
Now, in Fallout 3, the Enclave's helmet and armor looks like this
http://images2.wikia.nocookie.net/fallout/images//a/aa/Fallout_3_Enclave_Powered_Armor.jpg
You may notice some similarities between the two. Well, they aren't a far off-shoot of each other, so I'd appreciate, and hell, I'd think a lot of people would enjoy a mod hammering out the differences so we can experience one of the more 'bad-a' power armors that the Fallout universe had to offer.