BiS Bonus armor? Care to link what you're talking about?
Here you go. These are the pieces that I found will be overall BiS for Prot mail/plate classes (Pally and Warrior).
29:
Chest:
Double Link Tunic - Item - World of Warcraft Provides 24 bonus armor which as of WoD equates to 24 attack power, with the new nerf on base stats (str agi int) 24 atk power is directly equivalent to 24 str so the chest will provide 24 str, as well as extra DR and the dodge will either be turned into more bonus armor or into random base/secondary stats.
Shield:
Shield of Thorsen - Item - World of Warcraft : This item IS NOT RIGHT ON WOWHEAD, in-game and in warlords it will provide even MORE bonus armor and base armor to shield, it ingame is shown as I think 945, ill check and edit when I get home. Shield gives 20 bonus armor on Wowhead, and even more in game, so even at wowhead standards thats +20 str, making it far far far BiS.
Bracers:
Green Iron Bracers - Item - World of Warcraft Provides 16 bonus armor making the sum total a 16 atk power 5 stam bracer with the extra DR bonus that all Bonus armor carries with it.
Head:
Chef's Hat - Item - World of Warcraft A personal favorite, 40 bonus armor, which means 40 attack power, thats huge, and far in the lead for BiS damage wise, for Fc'ing and tanking, it provides something along the lines of 12.7% total DR which is better than LFH's surv boost overall (Talked about with real numbers by Hashbrowns in the 29 warrior discussion thread)
Those are the ones for 29's, Ive also made a 39 set, which granted actually has a lot more gear with bonus armor the set is far larger forward gap from current BiS in 39s, much bigger than the advantage people who max out with this will find in 29s.