I have a 2003 black svt with 105,000 miles. i just changed the thermostat and the thermostat housing because it was leaking, and i also had to get a new dimmer switch beause my low beams werent coming on. I just ordered a new timing belt with assembly parts to change all that. But besides brakes, tires, oil, is there anything in particular i should know about?

accessory belt, spark plugs, timing belt pulley and tensioner and valve cover gasket

Welcome to the forum.

Sounds like you are off too a good start with your SVT!

You may want to do a gear-oil change if you haven't, that can help the shifts go smoother.

Also, if you have extra cash to burn, get yourself a tune from tom (1turbofocus), it will make your svt feel a lot more fun to drive.

welcome friend to FF. looks like your off to a good start. I would also recommend flushing out the radiator and put fresh coolant

The radiator has been flushed, the timing belt pulley, tensioner and valve cover gasket are being changed tomorrow. Spark plugs this weekend. and i will also change gear oil.

what is the tune? Meaning its purpose and what is done