Here is a resin Flat Hood for the Revell/AMT Buick Regal and Grand National kits.
This does not have the scoop like the one in the kits.
Resin '87 Buick Regal/Grand National Flat Hood
As with many resins, you'll need to clean up any excess flash, pin holes and wash down with a good degreaser to remove any oils from the molds. Also before paint, check fitment as resin differs from plastic parts.