the 4AGE was done in japan as an option for the ST162

the ST162 can be eligible for a 3SGT-E swap. what a pain in the ass!!! i did it once...only once...what a bitch! also, the handling gets all funky cause of the extra weight and your suspension (if already done) is practically useless. prepared for major pain! the GT-S trans (3sg-e) will work, but is kinda queer.
don't turbo a 5S!