In regards to the sillycar, you would think a user with the name Mufflore would know more about cars . I guess then working on the car is an exhausting process . Jokes aside, you could probably change over some bushings whilst your there with aftermarket polyurethane replacements. This can improve handling if you do the right ones. Best to do for biggest result are the sway bar D bushes. For noise be mindful of the tyres you get, some are loud and some are quiet, and more expensive isn't necessarily better for this. You could also paint under your car with sound deadener, in particular the wheel arches and immediate underbody area. This can significantly quieten things down.