Please try to "reply" to your original post. Too many threads gets convoluted and is confusing for the readers...
As for your car, it does appear to be an SS 350. The Transmission tag (3890534) is for a Muncie M20 and was used with the 67 Camaro 350. The date code of P7M25 shows it to be assembled on the 25th of August, 1966 for a 1967 model. This lines up nicely with the engine code of August 29th, 1966, with also lines up nicely with your VIN of L402007 (which was assembled the second week of September, 1966).
The Rear Axle number of "PF 0913 G" indicates a 12 bolt 3.31 posi assembled on the 13th of September, 1966. (Your pictures are too small for me to see the casting dates on the "pumpkin".)
Congrats! Looks like a nice, "unmolested" car.