I'm very tempted to have a body vacuum-formed entirely out of screen material.
(But then it wouldn't vacuum-form very well, would it?)
I'm in the Pacific NW and my engines (two so far in the same truck) always seem to run hot... I need to punch some more body holes.
If you're reading 260-270 immediately following a good workout and the engine is running while you're reading those temps... I think you're in good shape.