68 Leaf spring ID help needed.

[813Demon340]

How can you tell a ralley suspension leaf spring from a regular spring? The reason I ask is that I am parting out a 68 4dr 6cyl and its leaf springs have 6 leaves per side. Are they worth keeping for my 72 Demon? I'll look for a part # if needed tomorrow.

Thanks,
Brent

 

[66fs]

6 leaves, should have part numbers on underside. shortest leaf as I remember.