If aesthetics are as important to you as performance, a stainless steel exhaust manifold is a piece of the puzzle you need to include in your build. Smeding Diesel's T4 2nd Gen Location One-Piece Stainless Steel Exhaust Manifold for the Cummins engines is a piece that you can not only rely on in harsh conditions, but you can also pretty up an engine bay.
This manifold is designed to fit the 24-valve Cummins engines from 1998.5-2007 and is made of 316 stainless steel which is known for its high corrosion resistance and durability. Coming machined with a T4 flange, this requires a T4 foot turbocharger. Being stainless steel, this manifold will not only be in the preferred 2nd Gen location, but it will also withstand higher temperatures without deforming and cracking, unlike other more brittle materials.