Oil pump.... reuse or buy new?

RustyRatRod said

Melling makes a lot of Mopar stuff so it's probably the same spring.

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I called Mellings when I did my how to change a pressure relief spring and they told me that they use the 72 psi spring in all of their Mopar oil pumps...

Mopar Performance uses a 55 psi spring on the standard pumps and you have to use the spring kit to get it to 75 psi...