The Duckmeister
Has a juicy midrange
I can't remember how epoxy resin goes with it, but polyester resin will dissolve styrofoam/polystyrene in seconds. One of my boatbuilding jobs included sticking in blocks of styrene for buoyancy; we'd swathe it in packing tape first before glassing it in so the resin wouldn't eat it.I will make a mold, probably inside shape and go over. That way I can watch the lay and final flatness of the top. Styrofoam mold so I can cut it out if it sticks. Will be subject to engine bay radiant heat though minimal. Resins seem ok to 70C ish.
I can get 1m x 1.2m of cloth for about $75 and resin will take it to $100.
Reckon I will give it a go.