That was very good and detailed review of this model
Few things I noticed:
Variation 1: Made by ERTL, Released in 1983
ERTL did have diecast KITT models in early 80's all right, but the one in question now (ERTL Joyride) was first released in 2004. I don't think the 1983 KITT had working scanner for instance.
Sometime KITT is referred as the "Black T-Top" in the show but never as a "Firebird Trans-Am"
In the 1st season KITT was referred as a Trans-Am or Pontiac few times for instance in Trust Doesn't Rust and Inside Out episodes. Later KITT was indeed called a "black T-top".
For those fans that are really nitpicky to the show, ERTL has 3 minor flaws.
During the years I've had this model (from 2004) I've noticed a "few" more flaws but I still like this model very much. Many of the flaws can be fixed if you have some model detailing skills.
Would be nice if they'd update the model and make it even more accurate to the show, perhaps even with some additional electronics for fog-, tail and dash lights, KITT sounds would be cool too