Thanks for the input. I will talk to the powder coat folks. He is going to bead blast it. He asked me what color I wanted and i was going to opt for black. He said it was high temp black but if I need the aluminum powder coat I'm sure he'll have to order.
I'll also check out the ceramic coating. I hate to ship out to get it done so I'll look for a local place. Either way heat shield is coming off.