If you have the appropriate control box, you can (although only mechanics typically have this). The terminal to plug it in to modify the engine controls is on the floor, between the driver's door and the driver's seat.
Bear in mind that any adjustments made will appear in the engine computer data, which will be downloaded by mechanics whenever it goes in for service. Additionally, if your truck is equipped with a Qualcomm unit, that will indicate your speed and engine performance as well, and will send an alarm to your company if you're going over the company's allowed speed (assuming it's a company vehicle).
Additionally, for owner/operators or small fleets, the regulatory speed may be a condition of the insurance policy, and this may result in a violation of the terms of the policy.
You might also want to take into account that - if you're a company driver - your company WILL fire you when they find out about it, and it will be included in your DAC report.
One can purchase used Freightliner Century trucks from Auto Trader in Canada. The store offers both new and used trucks. If one is interested in used Freightliner Century trucks, there is a 2006 Freightliner model available at the store.
No
5.25 inch speaker
Somewhere in the vicinity of 16,000 - 17,000
128 332 02
3.7lbs
This is going to be a very difficult question to answer, seeing as how the kingpin is part of the trailer, and not the power unit.
Code 128 351 03
Depends on what your transmission is. If it's a manual, it may simply not be broken in quite yet, and you should double clutch, rather than float. It could also be possible that you're hitting the gears wrong.
Probably a bad power steering pump or bad power steering fluid.
That goes through the engine ECM, and you'll need to have it diagnosed that way.
Repair whatever's causing the fault. So long as the fault exists, the ABS light will remain on.