HEMI swap

I'm interested in doing the swap. My concerns are

1; What year HEMI is the easiest to swap in?
2; from a truck or car?
3; best place to look for it?
4; Do you need an after market wiring harness
5; I would like to use a tranny that come with the engine what years to avoid per wiring also?

Any help would be great! I plane on putting it in my 69 Dart.
Author: admin