NISSAN 300ZX ENGINE SYMPTOM

So, This Is My First Time Asking For Help On This Site So I Will Say As Much As I Know So I Can Get A Better Answer On My Issues. :( So...

I Drove The Car Home An Hour After Purchase. Replaced The Clutch Which Was Bad And 2 Ignition Coils. Now, It Is Not Cranking. It Won'...

My Car's Engine Started Running Rough While At A Stop Light. After I Parked For An Hour And Restarted The Car, It Ran Fine Going Home....