The 1jz didn't come out of the aristo, it came out of the sc300 in japan(soarer). Do you want to do a manual conversion or keep it auto? Auto will be the cheapest, you can get a 1jz with auto tranny for about $1000, or you can go with a 2jzgtte with auto for around $2000. Now if you want to go with a manual, a 1jz with a 5 speed will be about $2500 or you can go with 2jz with a 5 speed for around the same. If you want the 6 speed, your gonna pay a ton. The 2jzgtte with a 6 speed is gonna run you about $6500. It s crazy, if you want a fun car and want to keep the money down, go with the 1jz. Still has a bunch of power and is capable of a lot. Good luck.