I just bought a 2013 GS350 with 52k miles. The car runs pretty smooth and I don't feel much of the transmission shift in general.

it sounds loud and nice when I really floor it. however when step on the gas pedal hard (flooring it), I can feel the transmission gear shifting almost like a little clunk, is that normal or am I not supposed to feel the transmission shifting even when flooring it?

Also I really like the speed and how the car sounds when I really floor it, but is that bad for the car?