Bracers: replace for saronite swordbreakers
Boots: replace with Forge of Souls drops. The heroic ones are better, obviously.
Cloak: sentinel's winter cloak. Costs frost emblems, but worth every one.
Trink: Glyph of indom, bought with triumph emblems.
I know you didn't ask for this, but you need to tweak your spec. Take the three points from SoB and put them into Imp IT. Blood tanks do no care about having extra RP. DC is not a significant contributor to our threat. Standard RP generation is enough for RS and IBF.
I prefer DS glyph rather than Disease. DS glyph is more threat and disease glyph tanking will be dead in 3.3.3 due to the IT threat buff.