Compression Ignition Addict
Join Date: Dec 2008
Location: port arthur texas
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Since you say you don't have to time to wait on the heads your not going to have much time to do anyother mods.
SO ya may as well swap her out if she is complete and running.
Keep in mind with a 03 to 05 swap you need to bring the ficm and pcm from the 05 with it as well as the engine harness. 05 uses a different strategy and has some sensor changes necessitateing the harness swap.
Lord I shall lead them to the water but I will not try to make them drink