Sherwin Williams shows a formula for basecoat in the 7000 series. I've used it before on some black and it covers very well. Not very cheap though, it's their top line base. There is a very good SW dealer here in town.
Matt 69 Dart Swinger 340 83 W350, Megasquirted with 46RH Old news: 72 Demon street/race mobile Latest: 70 Duster backhalf car and even more