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To really lessen the possibility of getting burned by hot sidepipes, you'd have to install a pipe shield over them. There are 4" 180-degree shields available, but they are 48" long. They are available in polished 304 Stainless, as well as aluminized. Solid, round holes, or slotted. I think the solid ones would look good, but you'd have to cut them down (you could get both sides with just one shield). You need the air gap between the hot pipe & the shield will stay pretty cool, plus it will cool down quick because they are thin material.
As far as the high temp. ceramic coatings, there are some good ones out there, & they do reduce the outside temp of the pipe. Even still, it will still require a cooling down period with hot pipes/mufflers. The main positive feature with coating the mufflers/pipes, is that they will fight corrosion better than paint, & look good much longer, plus they can take the heat.
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