Here is a set of 1966 Impala Skirts, these will fit the the REVELL kits.
1966 Chevy Impala Resin Skirts-REVELL
SKU: SCR 66 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.