a500 question

Wasn't suggesting that you buy spring from ebay.
Ebay link was used as a reference to confirm that was the design spring you were looking for.
As of April 2000 part numbers 1942414 and 4517191 were still available and did not supersede each other.
A Chrysler dealer can check to see if either number superseded since 2000.
Numbers may now be discontinued but they can still run a history search on each number.