Car modification..

Hi everyone!

I'm into car modification right now for my Toyota car I got a friend that is helping to modify my car. We certain that we need to change some parts of it, like its Toyota Oxygen Sensor to make sure it checks the amount of oxygen in the exhaust gases, that the first part that we he notice. 2nd is the Toyota Parking Brake Cable that operates the parking brakes, to hold the vehicle to a stop without applying the brakes. And last is the Toyota Release Bearing that reduces friction between the pressure plate levers and the release fork in the clutch system.

These are just the few thing that we certainly know need to be change.

Do you have any suggestions of that parts that need to be check or probably need to be change.

I would appreciate all your suggestions..Thanks!