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Usually by the time an SRT swap is done and complete, you're better off just buying an SRT. Don't know about a standard 2.4 swap. Not sure what all is required for that.
I would personally get a 2.4 and build it up with SRT-4 internals. It is much easier to swap in the 2.4 than the SRT-4 engine. You can run the 2.4 with your stock PCM (with some work) as opposed to getting an SRT-4 PCM that hasn't seen sentry or upgrading to a Stage 1 PCM.
The AF/x race PCM would be the best one to use. Second would be the AF/x Street PCM and then the Mopar Performance PCM. These are all discontinued, so you will have to search forums to find a used one.