Some of the sales codes you are looking for are listed in either the Color and Trim book or the Dealership Data book posted on Hamtramck Historical.
The Scheduled Production Date (SPD) 204 tell us the scheduled, not built, date of February 4th.
B43340 is the Vehicle Order Number (VON). Combined with the SPD, it gives us a unique number assigned that particular car used for ordering, invoicing and other administrative services.
The B in the VON indicates the car was built for sale in Canada.
The 000 indicates the door panel to go with that particular trim code.
Here's the link to Hamtramck Historical and the books you seek.
The 000 code says exactly that: zilch-zilch-zilch. It appears by default on hard tops, that didn't have inside mouldings on the window frame, by virtue of its absence.
Well first it's the interior that sold me on the car. Next is the color, I am partial to brown. Luckily it's a 76 so no lean burn and no km on the speedo. I also see it's a 4bbl, some weird options on a plain Jane car.