[brucepick]

I have some stiff foam insulation panels. My plan is to fasten them to the underside of hood. Also possibly make a removable "hat" for the valve cover, to go over the built up foam layers it has now.

I got some high temp silicone to USA as an adhesive. Also rivet nuts to attach it to ribs in the hood.

However the winter weather is working against me. I'm not sure if I'll get to these later stages of the project before winter's end.