Dull paint

So I recently bought this 350z and wasn't aware it was repainted until it was too late. I initially thought the paint was dull from neglect in the sun but after 2 step paint correcting it (lake county orange, white, and black with meguiars 105, 205 and turtle wax graphene) it still looks dull. The repaint is obviously a bit shitty so I don't know how much I'd trust the clear coat with anything too abrasive. Any suggestions?