krylon has a good semi flat black, you can get it at walmart (imagine that) and its about as close to factory as you can get with a spray bomb... the krylon # is 1613.
Semi gloss, semi flat or satin will all look good. Just don't buy the cheapest rattle can that you find....get a name brand. I also use a primer first.
I put a '69 Mach 1 CJ scoop on my '67 and painted it satin black. This is just for the time being, paint is next up on the list... I'll see if I can find ya some pics.