69 Dart 5.7 "Butters" Build

Solid plan on the engine mods. You'll want to find 2011 Durango for exhaust manifolds. They turn down and clock just right. And have the big outlet. I have personally fit these on a 73 Scamp with a manual box.
I just sent you a message, right before seeing this lol. I thought you used the Jeeps 09-10... they're probably same for several years tho

I just found that the left side Ram is the same manifold... So I just need a right side Jeep/Durango

2011 DODGE DURANGO 5.7L V8 Exhaust Manifold | RockAuto