Yeah, I had to trim the hell out of my original tin (with important deflectors) to fit my IDAs on short DDS manifolds. I always joke that you can barely fit a feeler gauge around all of tin. It was a pain in the ass!
satin black? are they paint or powdercoat?
Satin black is a good description. You can adjust sheen of a repaint with/without polish and wax.
And they were painted by the factory, not powder coated.