So Im currently in the market for a 370z - the one Im looking to get checked out very well, but when I was on the test drive I felt, what is tough to describe, a little play/thud sound coming from the rear when I depressed the clutch to shift gears. All gears shifted smooth with no grinds, and I know the one subframe bushing in the rear (right above the diff - when looking at it from behind) tends to go back, but will look teary, and leaky when it does, and I didnt notice any residue anywhere.

Thoughts? My initial thoughts were that I was just mashing the clutch in too hard and quick due the immense difference in clutch weight from 350 to 370.

Any help would be greatly appreciated. Thanks.

 

My thoughts are the same as any used car. Find and pay an experienced tech to do a full mechanical assessment of the car. That's money well-spent...