"Soft below 3000rpm" is an understatement. Out on a flat highway at 65 mph (around 2000 rpm), 5th gear would not accelerate at all. Leaving a stop light was very sluggish. I'm trying to convince my son that he'd enjoy the car more if he had a stock cam that was fun to drive in town, which is where he'll do almost all his driving.
How do you tell that it has 3.31 gears? What does a professional gear swap cost these days? I did a gear swap myself in my underpowered 1995 Jeep many moons ago--would this Mustang be significantly harder to DIY?
Sadly, there are not plenty of unmolested manual-transmission mustangs around here at any price. I would really love to find him a stock 2011 V6 manual, but those simply don't exist within 100 miles of us, and we can't spend an entire day road tripping to see a car that we might not buy.