LSD's are needed w/ going around turns to help traction
LSD's in the 1/4 are used because they take more abuse then an OEM diff (including OEM lsd's because they are just as weak as an open diff)

Personaly Ive always used open diff LS trannys.. I pull consistant 1.68-1.74 60ft times on slicks and consistant 1.9-2.1 60ft times on street tires.

When i gaged the car in 3rd it could leave a couple hundred feet of duals so no 1 wheel wonder when i "did" spin. Ask a lotta guys that have riddin behind me in Richmond or any of the guys that were at RPMs last winter when i road by and gagged it in 3rd

If you do get an LSD tho, get an OBX.