Hemi wiring diagrams

Hello to all
New to posting so if I'm not in the right place let me know.
I have a 68 Barracuda and a 2010 SRT 6.1 pull out complete, engine trans (6 speed manual) wiring harness and computer.
I guess you see where this is going.

Is there anyone who modifies the harnesses and set's up the computer that you would recommend?
I'm in the early stages of the build, just got the power train set up. Trying to lay out the ground work.
Looks like a good place for information.
Thanks