Just a quick video of all the Pods in the game, their characters and the best stats they can possibly have.
Traction: R-600 Repulsorgrip
Turning: Control Stabilizer
Accel.: Mag-6 Injector
Top Speed: Block 6 Thrust Coil
Air Brake: Quadrijet Airbrake
Cooling: Turbo Coolant Pump
Repair: Rotary Power Plug
All of these items were bought from the Junkyard and repaired over the course of the game. While most Pods have a very high "Top Speed" stat, there is still huge variance between the actual top speeds of the Pods. Sebulba tops out at around 850, while Boles Roor/Ben Quadrinaros can easily break the 1000 mark with their boosts.