I had a late 21 build GT. Can confirm. Have the full front brake set up in my garage, even the dust shields. At some point I will put them up for sale. I took them off the car with only 1k miles on them. Have full suspension front and back out there too!
Welp... They did the recall and for some reason they updated the PCM as well, basically putting a stock tune back on. I found this out, when they told me the car was done and I drove off the lot and it bucked like a bronco, the service engine soon light came on as well as other random warnings--...
" You know, every item here was carefully selected. This lamp by Corbu. The chair by Eames. And this couch is an exact replica of the one Coco Chanel had in her Paris atelier"
Someone on here will get that.
You are probably just driving wrong. The right foot should be pressing the accelerator pedal quickly to the floor until it stops each and everytime you press it. No half measures.