A pair BBC valve covers with the Chevy Bowtie emblem and aluminum powder coated.
Hi-rise valve covers with the look of aluminum and the price of resin.
The bowtie emblem is very pronounced, but you can use a black wash or paint the emblem to make it more apparent.
Here is a resin valve cover for comparison.
One pair of valve covers, resin, by VCG Resins, 1/25 scale.