how to tell if dodge dart is a swinger?

The car isn't with me now but I will look at the fender tag when I get a chance. I looked up the vin. It just says 2 door hardtop high price class.
My vin means

Dodge Dart ("A" Body)
High Price class
2 door hardtop
6 cylinder
1970
Made in Windsor, Ontario , Canada

The remaining six digits indicate the sequence number (serial number)

For YOUR Car:

1976 Codes:

First Digit = Car Line

C - Chrysler

D - Dodge Monaco

L - Dodge Dart

N - Dodge Aspen

P - Plymouth Gran Fury

R - Plymouth Fury

S - Chrysler Cordoba

V - Plymouth Valiant

W - Dodge Coronet / Dodge Charger

X - Dodge Charger SE

Second Digit = Price Class

L - Low

M - Medium

H - High

P - Premium

S - Special

K - Police

Third and Fourth digits = Body Style

22 - 2 Door special coupe

23 - 2 Door hardtop

29 - 2 Door special coupe

41 - 4 Door sedan

43 - 4 Door hardtop

45 - 2 Seat wagon

46 - 3 Seat wagon

Fifth Digit = Engine

C - 225 1 - 1BBL 6 cylinder "RG" engine

E - Special order 6 cylinder

G - 318 1 - 2BBL 8 cylinder "LA" engine

J - 360 1 - 4BBL 8 cylinder "LA" engine

K - 360 1 - 2BBL 8 cylinder "LA" engine

L - 360 1 - 4BBL 8 cylinder "LA" engine (high performance)

M - 400 1 - 2BBL 8 cylinder "B" engine

N - 400 1 - 4BBL 8 cylinder "B" engine

P - 400 1 - 4BBL 8 cylinder "B" engine (high performance)

T - 440 1 - 4BBL 8 cylinder "RB" engine

U - 440 1 - 4BBL 8 cylinder "RB" engine (high performance)

Z - Special order 8 cylinder

Sixth digit = Model year

6 - 1976

Seventh Digit = Assembly plant

A - Lynch Road, MI

B - Hamtramck, MI

C - Jefferson, MI

D - Belvedere, IL

F - Newark, DE

G - St. Louis, MO

R - Windsor, Ontario, Canada

The remaining six digits indicate the sequence number (serial number)