I am a Drifter, I find Running a Fully Locked Rear Diff Still allows me plenty of Handling when Racing..

I just Locked the Rear Diff with Blue Tac and It is Easy to slide and when I slap on the Rubber it Still handles good around corneres and Blistering Acceleration off the line, I use a Stock front Diff to allow for Braking on the front end as opposed to an open front diff or locked front diff..