Razer, AE85 is just the name that everybody gives this model thanks to Initial D. In japan this car was sold with a chassis code of AE85 but if I am not mistaken it had even a different engine then 4AC that came in the USA version.
If you check the chassis code of this car you will find AE86 on it, not AE85, but indeed, it was sold in the states as an SR5.
In the end, its just a name, it still is the exact same car, just different engine and different axle, body is exactly the same.