[twister11k]

I am looking at buying a 70 Trans am and have been researching it a little and have some unanswered questions.
- green interior on a t/a with white body, is this common?
- it is advertised as an automatic car with 3.90 posi gears in it, was that an option?
- the first numbers in the vin tag says it is a trans am but on the body tag it says it is a regular firebird, the car is from the NOR plant. I have heard that the cars that came from this plant had all the body tags saying that they were firebirds, no matter what. Has anyone else come across this?
Any help would be appreciated.

Thanks