Im not an expert,but I can tell you what I have researched since I own one myself.
Swinger Special is a base economy model of the 2 door Dart(Hence "Swinger").
From VALIANT.ORG --
http://www.valiant.org/dart/1972.htmlDART SWINGER SPECIAL "Dodge" on hood and deck lid
Pentastar fender medallion(according to HAMTRAMCK ARCHIVES,this is incorrect,No Pentastar was put on ANY A Body in 1972)
"Swinger" fender nameplate with separate "Special" plaque , "Dart" quarter panel nameplate
Bright windshield and backlight molding
6.95 x 14" black sidewall tires
198 slant-six or 318 V8
More Info From HAMTRAMCK ARCHIVES http://www.hamtramck-historical.com/imag...t_Demon0006.jpghttp://www.hamtramck-historical.com/imag...t_Demon0007.jpg(Click on either one to enlarge once you pull the page up)