My wife and I did the same thing this summer, but I wanted the SRT8 version of the Challenger, so I did my search to find a model we would both like and wanted in the PLUM CRAZY color, it took me 2 months to find the ONE we wanted at Kings in Ohio. What a sweet ride, we get so much more noticed with the Challenger than my X-fire does. So far we have 3000 miles on her and all is great, the two cars are both very fast rides, but believe the X-fire SRT6 is faster than the SRT8 Challenger, with the only mod being a cold air intake on both cars.