1965 Dart GT "Charger 273"

It's possible I have found one of these cars, but I need some info to verify this. From what I've been reading, there were 180 built at the LA plant, and 300 "kits" sent to dealers. Here are my questions:

1) Did the "kits" come with the cars built at the LA plant for the dealers to install - maybe in the trunk of the cars delivered from the factory?

2) Were all "Charger 273" cars built at the LA plant?

3) What did the "kits" consist of?

4) Is there any distinction between a Dart GT that could have been ordered with the performance 4bbl 273 and these cars? I understand there were 6000 1965 Darts that were built with the HiPo 273

5) Does anyone know the serial numbers of the "Charger 273" cars?

6) How do I tell if the car I'm looking at was made at the LA plant?

The one I found has no "273 Charger" emblem, no Cragars - but interestingly enough, it has an older Cragar lug nut box in the trunk with regular wheel lug nuts inside it - and no "273 Charger" emblem on the dash. It is pale yellow, with black vinyl top - I recognize the vinyl as the premium vinyl fabric that you would have seen on an Imperial. This car also has red valve covers, but otherwise they look identical to the HiPo 273 valve covers I've seen with the black crinkle finish. The car is a survivor - no modifications at all, as near as I can tell.