Felpro for a turbo'd motor? Composite gaskets and turbo chargers = a BIG no no. You're going to be seeing EGT's in the 1450 degree farenheit range and that is WAY to hot for composite. I
I thought this was a question about exhaust manifold gaskets. What does that have to do with temp? Head gaskets are special 3 ply that will handle up to 30 lbs of boost. What gasket are you referring to?