I have also not done this for a HEMI yet and don't know how an existing PCM will communicate with a different motor.
Here's a brief outline... Good Luck
Remove the cowl grille (4), and cross-bar beam (Refer to 23 - BODY/EXTERIOR/COWL GRILLE AND SCREEN - REMOVAL).
Perform the Fuel System Pressure Release procedure (Refer to 14 - FUEL SYSTEM/FUEL DELIVERY - STANDARD PROCEDURE).
Disconnect the battery negative cable.
Remove the air cleaner resonator and duct work as an assembly.
Drain cooling system (Refer to 7 - COOLING - STANDARD PROCEDURE).
Remove the accessory drive belt (Refer to 7 - COOLING/ACCESSORY DRIVE/DRIVE BELTS - REMOVAL).
Remove the viscous fan/drive (Refer to 7 - COOLING/ENGINE/RADIATOR FAN - REMOVAL).
Remove the upper crossmember and top core support.
Remove the condenser (Refer to 24 - HEATING & AIR CONDITIONING/PLUMBING/A/C CONDENSER - REMOVAL).
Remove radiator (Refer to 7 - COOLING/ENGINE/RADIATOR - REMOVAL).
Evacuate the refrigerant (Refer to 24 - HEATING & AIR CONDITIONING/PLUMBING - STANDARD PROCEDURE) .
Remove the A/C compressor (2) with the lines attached. Secure compressor out of the way.
Remove generator assembly (2)(Refer to 8 - ELECTRICAL/CHARGING/GENERATOR - REMOVAL).
Remove the intake manifold and IAFM as an assembly(Refer to 9 - ENGINE/MANIFOLDS/INTAKE MANIFOLD - REMOVAL) .
Disconnect the heater hoses.
NOTE: It is not necessary to disconnect P/S hoses from pump, for P/S pump removal.
Remove the power steering pump and set aside.
Disconnect the fuel supply line (Refer to 14 - FUEL SYSTEM/FUEL DELIVERY/QUICK CONNECT FITTING - STANDARD PROCEDURE).
Raise and support the vehicle on a hoist and drain the engine oil.
Remove engine front mount thru-bolt nuts (3).
Disconnect the transmission oil cooler lines from their retainers at the oil pan bolts.
Disconnect exhaust pipe at manifolds.
Disconnect the starter wires. Remove starter motor (1)(Refer to 8 - ELECTRICAL/STARTING/STARTER MOTOR - REMOVAL).
Remove the structural dust cover and transmission inspection cover,(Refer to 9 - ENGINE/ENGINE BLOCK/STRUCTURAL COVER - REMOVAL) .
Remove drive plate to converter bolts (Automatic transmission equipped vehicles).
Remove transmission bell housing to engine block bolts (2).
NOTE: Do not use air tools to install engine lift fixture (2) special tool # 8984.
Install engine lift fixture (2), special tool # 8984. Do not use adapter (4)
Separate engine from transmission, remove engine from vehicle, and install engine assembly on a repair stand.