The GT500 is a different animal from the S550's that's for sure. I had the pleasure of driving a friends 2019 GT PP1 w/Recaro's, active exhaust, etc. and it was quite a different driving experience compared to my 08 GT500. Not bad, just different. The GT was much more of a smooth sports car whereas the 500 is much less refined and more visceral in the driving experience at least for me.
Add some boost to the Coyote and it becomes a whole new animal. Good luck with your search for a new DD.