540 Air w/ H100i Top Mounted Push Pull

I'm going to be moving an build in an old case to a 540 Air and I'm running the H100i just mounted with screws on the top of the old case. On the new 540 Air I am receiving I am wanting to run push pull on the top. I am pretty sure I don't have that hanging L bracket thing that came with the H100i and I don't know what is required for a push pull on the 540 Air. Am I going to need those brackets? If so where can I get them or replacement parts for the H100i.



Another random question on the front 2 x 140mm or 3 x 120mm? :D



Thanks