Two Recent Problems On My 1999 Es 300

[sarihiari]

A noticed recently two problems:

Engine Noise (possibly transmission):

When I floor it I hear a harsh sound like I am driving an older car with a V8 engine.

This is only when I am driving (i.e. the gear is on D), as I hear a smooth rev up to 6000rpm when I am on P.

What is causing this? How to solve it?

Shimmying and swaying:

My car suddenly developped this alarmin shimmying and sawying when I drive over a rough road, the car goes left right and feels really dangerous to drive.

Would changing the shocks/struts solve this? Suggestions.

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It is worth mentioning that about 4 months ago, I hit a rather high pavement and fixed the car, and drove a really long way continously (road trip about 1K miles) with no problems.

[SKperformance]

possible ball joints or wheel hubs

engine noise is hard to say without more details but check your engine mounts