Which paint?

[ITSADOJ]

Got a hemmorhoid project going...started easy but 'tis now a PIA. I'm trying to paint the plastic supercharger intercooler cover on my other car. I've tried Krylon, Krylon Fusion, and Rustoleum. Got wrinkles or otherwise bad results. Anyone have a recommendation as to which paint will cover nicely, bond well, and be heat resistant?

[Matt]

anything you use, use a bullydog bottom coat first on plastics

[ITSADOJ]

I decided to solve the problem in the same manner I solve certain medical issues:
I don't do my own dental work.
Add to that:
I don't do paint and body work. At least this is true after dorking up a project so badly that I dropped the part off at a body shop!
I suspect the cost will be worth it, and I might post the results afterward.