What ignition should I use???

GEO said
The newer cap mopar dist will wiggle the same way.

If It's just gonna stay in the garage and just started occasionally I would leave it stock myself

I don't have the original distributor any more. I would have to hunt down an old dual point. That was another option that crossed my mind.

I do want it to be able to start and take it out for a spin once in a while. When things sit too long, parts like to stick together....