I bought a ZipZap tune up Kit today (with the AE86 trueno body and AE85 Levin, my favorites!) and it came with a "turbo" and "nh" or NX or something motor, with orange and purple endbells, respectively. I was wondering what number these had to compare to the 2.2's, 2.6's, 3.0's, 3.8's, 4.2's, etc. Both of them make the car flip when I'm not careful

Scary fast. I guess I'm a noobie for saying so.