Duplicolor is good.
Just make sure you buy enough cans to lay it down thick.
Primer with the Duplicolor high heat, and make sure everywhere is covering.
Don't sand the primer, just spray the base coat. It usually takes about 3 or 4 coats to lay it down so it all looks even. The first coat you should just haze the paint on, so you don't get runs. While that first coat is taked up you can usually lay a pretty heavy second coat.
And then after the base Duplicolor engine clear realy helps it shine.