part number for a Goodyear Gatorback timing belt for a 1JZ:
40147
Already installed on my bastard JZ.
For my 1.5JZ we needed a 2JZ timing belt, we went with a Gates timing belt, going high lift/interference with it, so we'll see how it works out. My friends have never had a Gates fail, but yeah.... it's all they had

:
T215
Take the belt off that you have, and measure it or take it to them, and let the people who work at wherever work for you. Ask them to go to the back and find one for you, they will.
If you need ac delete or ps delete, measure yourself with some rope or string, and there you go. Just account for the tensioner pulley, you don't want to put a bunch of pressure on the belt or the tensioner, so measure accordingly.