Want to build a HEI ignition module similar to 70's style

Not in the near future. It goes to ground and presumably draws some current. There is a spike of ~300 volts on the primary side from inductive kick.

Primary current and time would be nice to see. Lacking a current probe for my scope . . . not that the scope is bright enough to see outdoors.

Bike is laid up until I get a valve tool. Two of the 16 valves have below spec clearances, and two more are borderline. I'd do damage to continue running it in this state. Minimum is .003 and one is below .0015.

Yes, adjust those valves first.

Current probe for what you want is easy to make, just get a nicely oversized toroid and put say 50 turns of #20 hookup wire around it and a 5 ohm metal film burden resistor. Run 25 feet of 50 ohm coax to the scope (which will be nicely in the shade) with the input set to 50 ohms. Start on a high scale and work down until you can read it.