I believe we just saw an example of RE, when Polar reverse engineered the General Lee to the Street Charger and then back to it's original form of the Petty Charger. It involves taking an existing kit and engineering a new or refurbished mold to resurrect a section that was too damaged or re-engineered too many times.
Actually that's not entirely true. The Dukes of Hazzard ran around in a second generation '69 Dodge Charger. The other is a third generation '72 Charger base line car, as it still had the '71 C panels, but with '72 SE grille and taillights (incorrect for the '72 base). Originally offered as a Petty and a, IIRC, Bobby Baker clear-bodied NASCAR full race cars that they ran in late '72 and '73. Later sold as a molded in black Super Charger with a blown 426. All had the full NASCAR race suspension. In the latest offerings the kits are being issued in reverse order from the originals. The only changes between the two '72s bodies was the type of plastic, clear vs. colored. The only RE involved was for the interior, engine (components), tires and rims, some of which may have come from other kits altogether. The Dukes of Hazzard '69 borrowed the chassis and engine from the '72 race version and has never been issued in any other form.
For a better example of RE look at the Dave Burkett i.e. AMT/ Model King 1959 Chrysler Imperial. The body molds were found, but no chrome molds. Burkett paid to reverse engineer the new mold from an original issue chrome tree. One reason the curb-side kits were so expensive.