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

Old post for sure. I wish people would do a better job of following up with us so we know how things turn out! Regardless, here is my $0.02. I agree with a lot of the advice given. It could quite possibly be OK using that black Rustoleum as a base. However, I would not do it. It wouldn't take that long to strip the paint off with 80 or 120 grit. Then, from bare metal, a person would be free to do their thing. I am kind of anal when it comes to paint prep. Unless I absolutely know how things were prepared and am comfortable with the application, I don't trust unknown situations like this. I am absolutely not disagreeing with any of my FABO brothers who posted above, that's just how I roll. I have a friend with a 70 Cuda. He bought it sprayed with polyester primer and said the guy told him it was "Ready to Paint". I told him I would be the judge of that. So we put some guide coat on it and blocked it all off, and guess what? It wasn't really "Ready to Paint" at all. I fixed all the bad places, primed it again with my favorite primer (Evercoat G2) and blocked it again with guide coat. Then it WAS ready to paint. I rarely trust other people's prep work. That may seem a bit harsh, but it is the result of many experiences. I wonder how many times @Oldmanmopar has been told, "It's ready to paint. I just want you to spray it"?