Richard,
Back up a notch. Ask yourself - What was sprayed? Was it hung to paint, or was it on the car? What was, or could have been dipped? You want finishes from semi-gloss to almost gloss on the different pieces. I recommend your friendly local neighborhood Home Depot, Lowe's or Ace as a source to get different brands.
Hood Supports ?
Please define.
Engine Crossmember Tube
I got mine powdered coated along with the bumper arms. I did this because those items are exposed to road wear and powder coating is very durable. There are many glosses available in powder coating, 20%, 40%, 50% etc.
Brake Splash Shields
These may have been hung or dipped. Either method would leave "drip" marks.
I had some enamel base, semi-gloss black paint mixed by Kelley-Moore to dip upper A-arms and other items in "home made" fixtures. Just another concept.
Jim