360 magnum flexplate?

Hello guys new to this group I am putting together a 1973 Plymouth Cuda that has a locked up 318 in it and I'm looking to put a 5.9 360 Magnum motor in it is there any special stuff that I need to do the swap? Any help and tips would be much appreciated thanks in advance

And this is one of my first mopar builds to by the way everyone. So any input would be awesome