We had this one from 2007-2016 and took it on several vacations to the beach, was a good riding car for a small car and lots of fun in the sun with the top down (decent trunk space with the top up).
Wife owned one from 2007 until she traded it in on new jeep in 2016 and drove it daily, only problem it had ever was a leaking cam cover that was easily fixed. Photo is from the day she traded it in.
I have an 18' 1500 Hemi and 3:92s, has long tubes, tune, and x-piped true duals sitting on 35s. Empty I average about 16mpg. I have a heavy 22' boat and when towing it I get about 9-10.
Just for clarification, going from a 4" piston to 5" piston is a 36% change not more than 50% as stated.
4" piston equals 12.56" in area 5" piston equals 19.63" in area, 12.56 divided by 19.63 equals .64 (minus the .64 from .100 to get the .36 (36%)