Unfortunately I think that's our main choice unless you hit EBAY or someone on the board comes up with one from stash.
The OEM 8 hole on EBAY is set @ $900? + shipping (no small amount). Until someone comes up with a aftermarket piece the plain pad is just fine for my pocket. There used to be a guy selling aircraft insulators but I think copyright enforcement got him. I'm not sure that was a durable replacement anyway.
I think there are several vendors that sell Monte/Cutlass/Regal/Grand Prix pads tthat are pretty basic but might serve the purpose. Some people do some creative stuff on the underside too - like paint to match, air brush, attach reflective lightweight polished stainless, brushed or painted aluminum panel etc.