you must be comparing the multiair dart to your SRT, and even that is a hard comparison, the 2.0 N/A dart couldn't get out of its own way if it had to, moves on the highway need to be planed ahead and 6th gear is only good for completely flat roads or above 70MPH all the time and 80+ before hills
for power the 2.0 sucks, has good fuel economy but there are other manufactures out there that have much better fuel economy with much more power for about the same price or less, such as Hyundai