Restoring '67 RS/SS

[Marina66SS]

I need some help on my '67 Camaro. I have cleaned up the frame rails and engine bay and then sprayed it with GM underhood black, or whatever it is called. It still looks shinier and cheaper that the other restorations that I have seen. Is there another, more factory paint I should be using?

Also, is there any place I can find out how many SS-350 Camaros were produced with the RS option. I have found how many SS-350's were built and how many RS's were built too but no where has it given me the number with the combined options. Thanks.