Killer Monkeys Brasil

My question is, ppl with Heroic/Karazhan gear, will be able to do Zul'Aman? or u require more T4/T5 and SSC/TK drops to do it? my guild only do Kara, and we'r exciting to do it, but i'm not sure if our Kara gear will handle the bosses.

Assuming you are doing well in Karazhan, you should be able to go right into Zul'Aman. It shouldn't be easy, but progress always takes time.