If you're into straight line performance, it'll keep these high rpm motors in the power-band nearly "all the time". Stock converter is so damn tight, that at full throttle from a stop it holds the engine's rpm's down enough to sort of keep the engine out of it's power-band until your wheel speed reaches a determined point, and unfortunately even though these cars are plenty powerful from the factory, if you're not making that power all the time, you can and will be shown the tail-lights from other cars that don't even necessarily have as good of power to weight ratios as you.
In short, the car will be more enjoyable, and quicker to drive. I'd rather have all of my power all of the time, vs 100 more hp with a tight stall mated to a motor that's not very torque rich. If a positive displacement blower is in your future, the torque will come up nicely and the factory converter isn't so bad, but otherwise........Circle-D