Flat Black Paint

[The Humbler]

I am seriously considering painting me car a flat black color but i am not sure what the process would be. since it is "flat" black i assume there is no clear coat used. So is there a automotive paint that is flat black and if so how would you protect the finish from scratches and fading etc. Also i have heard where some of the "ratrod" group just use a primer called dp-90, is this and exeptable painting method. What paint did plymouth and dodge use on the blacked out hood of the cude and challenger in the 60's and 70's.