gatewright,
you will not regret that descision. Once used to the power of a stronger car, it's hard to go back to less. The 3.7 is really a capable beast. The power to weight ratio is better than most cars and the engine hat torque as well for a relaxed drive, if required.
But most of the time the power will overwelm you.
Had some fun yesterday in the black forrest area chasing a group of 911's.
They have little better traction out of bends, but it takes the Turbo to be better on acceleration.
Just to show you how good the car is..
Regards