I have a PRC aluminum radiator made specifically for the AD trucks. As you can see the truck has A/C and a separate trans cooler.
I'm also using a home made shroud and mechanical fan. Haven't made the decision yet but I might go to an electrical fan next year.
Mine has a Mustang II IFS which gives me more room for steering since it uses a rack instead of a big box.
As you can see the hemi completely fills the engine bay so I needed all the space I could get for steering.
Running headers out the sides behind the front wheels (gasser style) will require a lot of fabrication but can be done. I used stock high performance manifolds simply because I had them. Could have used block huggers but it's not a race truck so I saw no need to go that route.