Screw Drivers Top Tier S rank, 5 speed gear box, with 7 Stage acceleration.
Here is one of my Screw Drivers build. I has 4 Top Tier turbo gas, engines with Electric boost. It is considered to be S rank, 5 speed gear box, with 7 Stage acceleration, 8 wheel drive. 4 wheel steering.
Note: This not a dragster, but a competition build, the gear staging is in the "Normal" track speeds, allowing good acceleration and speed if you really need it.