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The oval track springs are offered in thicker material than the stock springs sets, so that would explain the 3/8" thickness. The 20.5 front segment also point towards an oval track spring as A body and Super Stock springs are 20" and regular B/E springs are 22". Part numbers don't jive with oval track springs though, so maybe they are either an old set with a different numbering schema or from the original company making them up for Mopar. FWIW, current Mopar part numbers are P4529415 for 1" arch and P4529414 for zero arch.



Sorry, put the wrong number in, p2539334 & p2539335 set up like the ss springs with different archs. Original stickers and wired together, never used.
Might add they are the same length as a-body just pin 1/2 inch farther back

Last edited by cudaman1969; 01/13/15 11:30 PM.