Glad you found the part.
Do any of those replacement part numbers alter the air to fuel ratio to make the engine run smoother than the Chrysler original?
Have a vented distributor cap:
https://www.cartalk.com/content/i-bought-new-chrysler-cordoba-leanI wonder if modern Irridium tip spark plugs would help?
I have often wondered how lean a a/f mixture
a modern twin spark plug variable valve timing 5.7 V8 could get to
with an aftermarket EFI like the Megasquirt.
At the Australian Autospeed website years ago there was a review of an Australian spec Honda Insight that leaned its gasoline engine highway cruise air to fuel ratio out to 25 to 1, and the liters per 100 kilometer dash display got above the equivalent of 60 miles per USA gallon.
I cannot find a link to the article through Google search
but all the Autospeed articles are in the Wayback machine of the Internet Archive.
Of course 50 to 1 air to fuel ratios used to be common at highway cruise on 1980s American diesel pickups.
https://www.sae.org/publications/technical-papers/content/880291/You can still legally do lean burn in the USA on natural gas generators, with the economics favorable around 2000 hours of operation per year:
https://www.generac.com/Industrial/GeneracCorporate/media/Library/email/Rich-Burn_FactSheet.pdfDetonation danger goes down at very lean mixtures.
At 23 to 1 air to fuel, compression ratios of 15 can be used, says German test engine results:
https://www.sae.org/publications/technical-papers/content/2021-24-0034/