I've used the Mirage system you are talking about. It works pretty good but follow the steps closely. As for a clear, I used HOK lacquer clear and PPG's brand. Neither one reacted with Duplicolor. I couldn't find a two part that was compatible with Duplicolor. You can forget getting help from anyone in the technical department at Duplicolor. I went down that road and all they will recommend is Duplicolor clear. I painted an air dam for my bike and used the clear that came with the Mirage system. To be honest it turned out better than the the HOK and PPG.