Where are you from. Santa Cruz Bolivia or Argentina?
The stuff you are looking for is very expensive in brazil. We usually try to buy that stuff in the US of UK. However there are people that import most that stuff here. For me the best store in brazil is from curitiba you can buy online. www.armazen4x4.com.br For air lockers and suspension I usually buy from www.expeditionexchange.com in the US.