so i believe my driveshaft is loose. like when im under the car, i can be able to twist the driveshaft and it moves like by 1/4th of a rotation. is it a bad driveshaft and needs to be changed?

like when i gas the car and quickly clutch back in, you can hear my driveshaft shake and choke a little.

 

1/4 turn does seem to be a little much, but i doubt it is the driveshaft. most likely it is just the gears in the transmission/diff meshing together. some play in the rotation aspect is normal.

gassing the car and quickly applying the clutch in any car i think will produce what you are talking about.

if you don't notice a vibration constant with vehicle speed then I wouldn't worry

 

are there any kind of bushings for the driveshafts? a friend told me there was. idk if the S has it.