I owned an 05 Pontiac GTO 6.0L M6 aka. Holden Monaro (Australian import) which many say will tear up the Mustang. There were only 40,000 built in 3 years. I modded the GTO with full suspension, sway bars, cam, lifters, intake manifold, headers, corsa sport exhaust, ect. Basically everything without going FI. She pulled around 445 rwhp and 415 rwtq on the dyno.
After I test drove the M3 w/ DCT, I was grinning ear to ear, and knew I had to have it. I felt so connected with the road. It just felt liberating. The only disappointment with the M3 is that it doesn't have the torque I wanted; however, the car pulls hard in the upper revs.
We shall she.. I am taking delivery of the 13 M3 ZCP in about 3 weeks, and I'm hoping the car will keep me excited like the GTO did for the past 7.5 yrs. It better for $75K LOL.