Thank you for the help.
By the way, the yokomo pulley's part number is ZR-543-33
the one in drift speed is ZG-503, both are differential pulleys and 33T,
but is it the same?
Found this in yokomo's website:
ZR-543-33 Front One-Way 33T Differential Pulley
ZG-503 33T Wide Rear Differential Pulley
I got the part numbers needed in this setup from this website