LA360 or Magnum?

Woods74,
The power steering pump is the same on a van as a truck or durango, its the bracket thats different between trucks and vans.

Trail Beast,

Dont forget the benefit of factory installed hypereutectic pistons and moly rings. The roller cam is worth the swap alone.

As for your trans, you can easily convert a 4x4 to 2wd by simply swapping the output shaft and OD housing to 2 wd. If you dont want to mess with installing od trans, sell it for $500-$600 to help fund your build or buy a set of bare EQ heads with the $600. I would also at least swap in a better cam as the 5.9 has a pretty weak one factory. You can install a .450" regrind for $175 plus some pushrods.

I would also give serious consideration to using the factory multi port since you want to keep it close to stock and it seems to be a daily driver. You wont be sorry you did.