Thank You Scott.
I was little squeamish about the Roush exhaust / intake combo, but as soon as I heard the note I was very pleasantly surprised . The resonator is stock and with that weird sound pipe delete, this car is still very quiet in comparison with my old pushrod 5.0+magnaflow exhaust. (I am contemplating Magnaflow resonator, but we don't tell anyone ).
This car is manual 2015 GT premium ( 50 ann. trim), sport package combo, with 4500km on it., No Recaro, no subwoofer. Basically a "new" car . The tires are original and mint. Previous owner put in the Roush stuff with tune, Mishimoto catch can and hood struts. That is all I could find upon a brief inspection. The clutch feels very soft, almost too soft, so I can only assume that the spring is still stock.
Unfortunately I can't drive it at the moment ( -21C/ -5.8F ) , so I have plenty of time to do the research.
Thank You so much for your feedback, I will need a lots of help, so far the main thing is to get the rid of the loose rear subframe, bushings , inserts, brackets, etc.. Then I will take it for a road trip to B.C. to find out what my priorities are going to be, also I have to consider my wife, she is very decent driver and Muscle car enthusiast . If she will fulfill her wish and get her Hellcat, I will have an open season with my GT .
That ugly Mishimoto catch-can has to go, I will have to sell some of my WNW kit and get Ford Motorsport catch can, much sleeker solution without the hello-kitty aspect.
That is for now, I am gonna check out the 6g forum.