Thats a good one Y21

I am guessing that it isn't factory installed headers and or headers in the trunk ala '69 Z/28's but rather some sort of special intructions or stickers that needed to be applied to the car.

The series of Y options were used my Chrysler as codes for sold codes, just as the M series was used for mouldings.

I am guessing if Mopar offered headers from the factory it would have been another A series of options or maybe a N series along with dual exhuast and chrome tips.

Also notice there was no extra charge assigned...I don't think they would go to the extra trouble of installing custom exhuast on the assembly line and not make some extra $$$ for it.

I think headers were available at the dealership level. As part of the Scat pack or Hustle Stuff program. These would not show up on the window sticker, but rather the selling dealer generated invoice.

Also note that car was delivered without any fuel? Are those two codes related?

[sarcasm] did it come with one of those 100 mpg special carbs that the oil companies efffectly took out of the marketplace[/sarcasm]

Thanks for posting the window sticker!

Where's Mike R when you need him

Dave