The black textured paint on old Mopars is called organisol. Original paint was lacquer. The modern equivalent is PPG DCC9355.

It's not easy to spray for the first timer so watch the following beforehand.

https://www.youtube.com/watch?v=wZ2FkEQ_Hk0

and

https://www.youtube.com/watch?v=hCqLHEozH1k