for the clutch you will need around 500 miles of CITY driving. stop and go traffic.
gears, everyone has there own opinion. some will leave the shop on go beat on it immediatly. others say to do two or three heat cylces, and to take it easy for the first couple hundred miles.
Yeah, the clutch definitly does need a break in. The gears like the other guy said, some say yes, some say no. The guy who installed mine (professional suspension guy for a few different drag race teams) said they don't need a break in.