Yeah you will need the cab wiring harness for the connections on the throttle pedal.

Cab wiring harness
Engine Harness
Engine Compartment Wiring harness (Includes Power Dist. Box)
PCM
IDM
Make sure you have the MAP sensor and the wiring for it

That's about all I can think of at this point. Honestly I would grab all you can if he is willing to let you have it. Better to have it and not need it than the other way around.

 

Dang he just called and said the wiring looks to be in bad shape. I still think i can get the pedal and the IDM and PCM.

 

At this point, I still have the wiring harnesses from my truck. I have one guy who thinks he wants them and one guy that says he wants the whole engine, but has never come to get it, so if you still want wiring harnesses PM me.