PCM Questions for a Swap

Yup, you should be able to find a late-model tuner locally, anyone using HPTuners or SCT Tuner should be able to get you squared away if any issues arise; but as TT5.9mag said- get it running first. You may not have any issues at all. If it does have the security feature active, you won't get a no-start, you will get a start and it will die within about 5 seconds; but it will start.
If you can't find a local tuner, you could try these guys:
Auto Computer Performance, ECM, ECU, PCM, engine computer, auto computer, ecm repair, pcm repair, ecu performance programming margate,FL
In addition to many build threads on here, this site has some good info, but it takes some digging/scrolling to find things:
David Belau | 1967 Plymouth Barracuda budget pro-touring build (wordpress.com)