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.html

DART 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.jpg

http://www.hamtramck-historical.com/imag...t_Demon0007.jpg

(Click on either one to enlarge once you pull the page up)