You can transform your sleeping Tamiya TT01 into RWD drift car with very little cost.
You can use 3 types of caster angles
Three toe-ins (2, 3, 4 degrees) are available.
disc brake kit can also be fitted
You can see the detailed assembly method and necessary parts in the YouTube video linked above. Print 100% size.
https://www.youtube.com/watch?v=oYZo2F9AmlY&t=27s Stage-1 is a concept that uses many parts of TT-01 chassis at low cost.
https://www.youtube.com/watch?v=Lpe-R11Vccw&t=34s Stage-2 recorded the upgrade version after that(tie rod, front bumper, rear diffuser, body mount bracket).