Daily driving an A-body
The 06 Stratus will ride better, stop better, handle better, get better economy and will likely out accelerate the 318 car (even if it's a 4cyl), not to mention creature comforts like AC and a decent stereo. You won't get much for the Stratus if you sell it and depending on how much/long you financed it for you could be upside down on the loan.
As much as I enjoy driving my Barracuda most every day March to Nov I do have two other late model vehicles I can choose to drive and my 48 mile round trip commute is on lightly traveled back roads. I just couldn't imagine being stuck in stop and go traffic every day with the Cuda, especially in 90+ degree temps.
I wouldn't get rid of your Stratus to add another project car to your fleet.