76 dodge d100 magnum swap

I have a 94 full size van that I got for free that runs and drives great. I want to swap the 5.9L magnum and overdrive trans into my 76 dodge d100 that had a 318/727 combo in it.

I'm not really up to speed on the magnums

What will work and what will I have to change?
Will the motor mounts line up?
Will I have to make a new trans mount?
Will LA headers fit the magnum heads?
Does a LA front cover and water pump work on a magnum?
Does a LA distributer fit a magnum?

I plan on using the magnum 4bbl carb intake(no fuel injection or electronic bullshit)

Any thing else I'm not thinking about here?

Appreciate any help you could give, thanks - ssduster360