Great write-up thegab! Going from a manual rear wheel drive two door Roush Mustang to an automatic AWD sedan and one not developed for pure sport is a big change. Have you tuned your MKZ yet? If not, do it! Also, a louder exhaust would help this car out a lot. It would be nice to hear a little growl upon starting and spirited driving. If I wasn't leasing mine, I would want to install an intercooler, cold air intake, and exhaust.