User blog comment:Wardie1993/Ideas for where I can get an armour piece enchanted with "Fortify Heavy Armour"?/@comment-26827106-20150727223035/@comment-6881629-20150728094207

Good point Oblivon or Skyrim. Seeing as you only want one piece of armor i'm guessing its for enchanting your own, with Oblivion you just need to know the spell to enchant armor unlike in Skyrim.

Probably better to ask questions and for help in the forum not only can you just make your thread in the section for the particular game but more people will probably see it.