One way to reduce the heat transfer is by using a Phenolic spacer between the head and the intake to cut down on direct metal to metal conduction.
The air to air surface radiation can be reduced by a shield.
I made a very similar item to fit on the golf as the turbochargers in fairly close proximity to the intake.
In my case i used two thin sheets of stainless with a layer of thermal wrap/blanket sandwiched between and bolted to the inlet by the fixing bolts.
Certainly helps to keep it cooler.
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