painting my 273

I am going to remove my 65 273 to paint and also take care of painting under the hood. My question is what color red is the best choice for a stock motor. I've read several different suggestions.
Also I have read to use primer, and not to do primer. Any thoughts.
I've also looked at some photos of the exhaust manifold. Some are painted red, some black, and some silver. What would be the best.
This is a stock 65 Barracuda Formula S, not a show car, but would like a good looking ride.

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