Hood scoop

Looks like one of these from the Classic site

MA2447 - 1970-76 Plymouth Duster Dual Snorkel Hood Scoop
http://www.classicindustries.com/product/mopar/parts/ma2447.html

MA2449 - Dodge/Plymouth Universal Dual Snorkel Hood Scoop
http://www.classicindustries.com/product/mopar/parts/ma2449.html

MA2445 - 1970-72 Dodge Dart Dual Snorkel Hood Scoop
http://www.classicindustries.com/product/mopar/parts/ma2445.html