Old Slow Coach

Anyone know the max torque and HP ratings for the stock 5 speed transmission? If you have a 500whp FD with an extreme pressure plate and 6 puck, and an LSD with heavy duty axles turning 9.5s on 18s, can you hard launch the car at the drag strip and not strip the teeth or anything else related to first gear?

Anyone know the approximate max whp of FDs which regularly sidestep the clutch at the strip and don't shatter their stock trans?