I will also add, the chinese amazon specials that you have listed are more expensive than Barr manifolds which are OEM quality. I only recommend Barr or Osco. I do not recommend amazon chinese manifolds.
classic symptom of bad key switch. confirm with your test meter that you have power to the purple wire during cranking. if yes, keep looking, if no, buy a new key switch.
been on my amazon gift wish list for about 4 years....... family thinks Im nuts. Also have burning tire rubber sent..... (reminds me of staging)
Just need the "grenaded the block and now the windshield is covered in oil" scent
I set dwell while cranking (cap of), and then rough in the timing, and adjust with motor idling. It's what was taught many years ago in highschool autos