Originally Posted by m3an
I dunno what the first guy wrote, but what you are probaly experiencing is the lash in the driveline when you release the throttle (no big deal). These cars make lots of noises. I wouldn't worry about the engine/tranny mounts just yet, if you want to check the engine mounts, put the brake on and put the car in first gear with the hood up. Slowly let the clutch engage and have someone watch the engine to see if there is any abrupt/unusual movement.
another +1 man. And like the other guy said, It's supposed to be/sound like that. well if you've still got some more doubts then by all means have it checked. or you could change the engine motor mounts
or any part you'd be doubtful of but I'm still sure that "clunk" sound would still be there.