Usable Headers/Exhaust manifolds

I am in the process of collecting all of my parts for my Gen III Hemi swap. I have an 06 5.7 from a Magnum R/T. I also have the exhaust manifolds with the down pipes from the car. Are these usable in an A-Body?
I can get a deal on a set of headers from an 04 Ram 1500 also if they would work. I know that the SRT Jeep manifolds would work, but are there any other headers/manifolds that will work?