Ceramic Coating Turbo Exhaust Housing

You guys thing this would help along with ceramic coating the manifold in controlling enguine bay temps and keeping heat inside the exhuast system.
Ceramic coating turbo exhaust housing. Over time this can weaken the cast housing. I ve seen some samples. I found a local company that told me there is a special turbo coating. A high heat ceramic coating can provide protection keeping the heat internal to the system.
He says it disperses heat and coats at high temp up to 2300f. Abrasive blasting and surface prep. I mentioned ceramic and he said absolutely not. A specially formulated 2200 degree high temp black made just for turbo components.
Keep your turbo exhaust parts looking good and the high temps in with a ceramic coating from stainless header mfg. Turbo housing ceramic coating special 44 95 plus shipping. Who is doing the best coating these days.