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Offhand, I'd say you broke the plastic distributor drive gear
But YOU sir, are one lucky SOB. That's because you have a 66 and you can download a free shop manual here:
http://www.forabodiesonly.com/mopar/showthread.php?t=132309&highlight=manual,+download
Der linky
http://www.mymopar.com/downloads/servicemanuals/1966_Plymouth_Service_Manual.zip
You do have to play with the page numbers, as the numbers in the reader do not follow the Mopar "dash" numbering system
Electrics, section 8 is page 189 in your viewer
/6 Distributor page 229
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