Hey...bought a 04 hemi 5.7 from a 2500...the guy stuck me on the ecm. Anyone know how I can match the engine no# to ecm? Dealer said vin only way..short of a carburetor ..swap.
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05 ECM and harness would work much better for tunability and simplicity of the harness. Check out our video on this topic from the link below.
Any 03-04 ECM will work for you. If you change the engine harness, you can run a 2005 ECM and harness. Best bet is to get a new ECM from a pull it yard for less than $40