5.7 Hemi A Body Swap

I need info on an A body swap. I can get a 5.7 with 40 k on it cheap. As far as i know i need a ecm, gas pedal and engine harness. I want to use the stock ecm and efi. I need info on what years fit together. I heard that a 05 1500 truck ecm only manages the the engine. I want to use a 727 behind it, turning a Dana 60 with a powerlock. Does anyone have info/