Can epoxy primer be used over Rustoleum rattle can gloss black paint?

I bought this 65 Valiant as a roller and the PO had recently painted the engine compartment with Rustoleum gloss black rattle can paint. I would like to have the under hood area the same color as the car so I'm wanting to get rid of the black and go with the body color. From what I can see the guy did a really good job of cleaning/prep work before he painted it and I'm hoping that maybe I can prep it again and epoxy prime it without stripping the Rustoleum? I'd appreciate any advice/suggestions. Thanks in advance.

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