Hard to tell what store sold that but pretty sure it's not a dealer item. You can still buy the aftermarket ECU's but lots of times they are junk.....and that was usually the case even in the late 70's! I used to pick them from wrecks in the wrecking yards and used them for replacements because they usually worked (if original) and lasted much longer than any aftermarket junk.Thanks , I know what the ecu is , curious to make/brand..
No sir it sold@Mike67 still have the idler arm?
Inbox full.
https://www.forbbodiesonly.com/moparforum/threads/moog-idler-pitman.198428/#post-911621904