Nope, The tail lights were the same on GTO and LeMans, the actual color is Marimba red. I have been trying to figure out a way to use the wheel covers from the polar lights kits on my original 64 kits, have used a set of poverty caps on one of them.
As the owner of a real 64 you did an outstanding job the only thing I would change is the color of the steering wheel , the 4 spoke wheel represents the factory 64 only wood wheel.
One of my favorites, this was one of the first kits I ever built back in the early 70s with the help of my father, both of wich are gone now, but a lot of great memories, I think its about time I start working on another one,