Altezza comes in:
2.0L 1GFE 6 cyl engine with either 4sp auto or 6 speed J160 manual. Some have LSD but majority do not, the diff is the smaller "A" gear set. This is either sedan or in the Gita wagon (SportX), equivalent to IS200 or AS200.
2.0L 3SGE 4 cyl engine with either 5sp auto (A650e) or 6 speed J160 manual. Some have LSD and some not so mixed bag, the diff is the smaller "A" gear set. This is only a sedan format no wagon, no similar US/Euro config.
3.0L 2JZGE 6 cyl engine with 5sp auto (A650e), no manual. Some have LSD some not, the diff is the larger "B" gear set. These were only available in the Gita wagon (SportX), equivalent to AS300, no sedan version.
I have also been told by a Toyota worker here in NZ the Altezza was made from a slightly different steel so is a bit more lightweight, but ive not been able to confirm. I can confirm that the majority of the Altezza dont seem to be as high spec as the US variant, i havent seen any with cruise control, not many (if any) have the 6 speaker stereo amp and sub set up. The ECU appears to have less options in the Altezza as well.
2001 Altezza Gita JCE10