PERFECT BALANCEAlthough it make look like it, it is not the exactly same car with left hand drive and just a different badge. The dimesions are different between them to meet US regulations(crash tests i think). I can't remember exactly why its different, but I know it is.
The Lexus IS200 (J) in GT4 is simply the Japanese Altezza RS200 with an "americanized" name. Look at the horsepower numbers. The "Lexus IS200" has 157hp, which is what the 6-cylinder model had (the only version that came to the usa). The "Lexus IS200 (J)" has 207hp, which is what the 4-cylinder Japanese model had.
Here's a shot from the Japanese GT4:

gt_Sileighty_1Ok I'm a pretty hardcore of initial D but, If you want the exact cars from initial D that bad, play initial D.
Maybe people don't want to play that piece of crap that Sega calls a racing game.