unfortunately, since the 1G FE is very very rare in malaysia. It will be very difficult for you to find a gearbox in malaysia, nor the halfcut. You can however find the "other" altezza engine 3SGE halfcut.
First thing is, pls find out whats ur gearbox code number. This is located on your car (silver)plate in the engine compartment. There will be a few codes there, look for the
trans/axle code. I am guessing its A650E or sumthing. 3SGE gearbox may not fit to your 1GFE engine
there's also a few things you can do.
1)check with vision ah wei. I think he may be able to help you out. If I recall, he may have a 1GFE gearbox 0123452155
2)transplant the normal altezza 3SGE engine with the gearbox. This halfcut you can get in malaysia anywhr. manual or auto is your choice. Halfcut for manual will cost about rm8k to 10k.
Auto halfcut should be below 8k
3) go for a 1jzgte transplant.
The thread is already in zerotohundred.com
good luck