Brakes ande front end? on 2003 Buick Century

At higher speed(50-60 mph), when road bends left(not a sharp curve), there's a little bounce from the front, I think you might say, as though the slightest road imperfection is affecting the suspension; and coming off the highway at high speed onto an exit ramp, when harder braking is needed, there's a real rumble in the brakes(and, no, I don't have ABS), and the response from the brakes feels really weak. What could all this be. the car was inspected 8 months ago, and there was, I recall, a little brake work done at the time, because i had complained that every time it rains, the brakes squeal and scrape for the first few miles when I first get going in the morning.

Thanks a million!

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1 answer 1 comment
The problem with the rumble when you slow down while braking is clearly a brake issue, it could be worn out rear rotors or drums or something else.

The front end/steering problem could be several things, I would have a good front end shop look at this ASAP because this sounds like it could be safety issue.
Thank you very much. I'll take it in for service as soon as possible.