right and left leaf springs

[73 duster340]

replacing the springs on my 73 duster 340. just got them from mancini racing they do not look like the originals and i cannot tell the left from the right one says 1981 the other 1982 any help?

 

[70aarcuda]

the odd number is driver side or left...and even number is passender side or right...

or call mancini.......

 

[Mr.Ed]

Also, the right side usually has an extra half or full leaf.