Other than brother kevt2005 recommand for IDT, There are other choice like
IMT (1:27 can fit many Mini-z body) by Xpower
BZ (1:27 belt drive system) by Atomic which can also fit Mini-Z body 98mm basaed (factory kit have Metal ESC no receiver that can use popular receivers)
AMZ or AMR to modify Factory ESC unit with your receiver
