Here is a set of 1963 Impala Skirts, these will fit the the Revell kit.
1963 Chevy Impala Resin Skirts- Revell
SKU: SCR 63 REV SKIRTS
$5.00Price
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.