[BoxerSix]

Any of the Thermotec or DEI wraps are good. D-pipes back is fine, just don't wrap any header with it. The header won't breath and will literally fall apart, stainless or not.

Ceramic coating helps anything whether FI or NA. Doesn't matter if the metal is mild steel or Inconel 625. You will see big underhood temp reductions using it.

Jet Hot Cerami-chome and Swain Technologies White lightning coatings are two completely different coatings alltogether. JH is a hybrid compound containing ceramic and an extremely high temp epoxy. ST is pure ceramic, and results in a rough, oxide like finish. ST is the hardcore coating and if it gets dirty it's difficult to clean. Is brittle and can be chipped off if struck by a hard object so it's not recommended for under the car. JH is the show quality coating that doesn't quite have the thermal capabilities of the Swain stuff, but can be mirror polished to that of polished aluminum. It's also VERY durable and needs to be machined off to remove it.

Swain Tech is also not recommended for turbine housings.