I've seen plexiglass heatshields, before, so I presume they can take the heat.
As for aluminum, if I were to use it, I'd stick some kind of heatshield blanket to the outside of it, like the stuff racers wrap their starters and alternators with. (Not header wrap tape.) I don't think the ceramic coatings really help all that much.
Function before fashion.
'96 Contour SE
"Toss the Contour into a corner, and it's as easy to catch as a softball thrown by a preschooler." -Edmunds, 1998
