5.9magnum questions

First off I can't find a used 5.9 anywhere in my area for love or money.
However one is sure to pop up sooner or later. What vehicle should I be
Chasing for a donor? I would like to use the entire front accessory drive.
A/c, alternator.... Serpentine etc. Will that stuff fit under my duster hood?
Also will the 340 hi po exhaust manifolds work on those heads? Thanks everyone.