This could be an option as i’d Need cutouts for the hood vents - the adhesive hasn’t melted from the heat? Pix to follow when I get into it...
Hey, so, no melting issues...
I think I had it on for a year or so, and just a few weeks ago put in a top mount IC and hood scoop. When I cut in the hole for the hood scoop I had to cut through the sound insulation.
Essentially it was a bit of "destructive testing" while cutting and pulling out the sheet metal, what I found was the insulation was still stuck well to the hood and was hard to separate. I have a 6BT under the hood, I'm not sure if it produces more or less heat than the toyota motors, but I'll mention that as a variable.
I cleaned the hood half assedly before putting the insulation on, I'm sure +90% of the members here would have done a more thorough (OCD) job of cleaning prep but regardless it sticks to it well and I have seen no sign of heat damage.
I should also mention, I installed LED strip underhood lighting, a ground pin switch, and a toggle switch flush mounted on my fuse box during the hood insulation. Anyone thinking about putting new insulation on, you should also grab 4 LED strip lights, I'd also go with a white, or yellow-y white color, mine are a bluish color and I think the color is annoying a bit but taping the wiring to the hood prior to insulation would be the way to go.
If your going to to the hood insulation, it would also be a good time to order under hood lighting, and then run the wiring down with your windshield nozzle hose.