I used to have the 4.1 clutch LSD and I swapped to a medium case 3.91 viscous before I swapped my motor. It may just be me, but in the cold it feels like the LSD doesn't work until it is a bit warm from driving/spinning. Once it's at operating temp I prefer the viscous to the clutch LSD I had. It feels like I can manage drifts easier.
As other have said, be careful around turns with the throttle until you're really used to it as you can go from a controlled slide to looking the opposite way fairly easily on some turns.
Last edited by voluted; 01-16-2011 at 03:45 AM.