Tell those people that complain to go ride in older model mustangs... Hah. Mustangs just have stiff clutches. That's what it is. :/ Only real thing you can do is aftermarket hydralic clutch kits and maybe aluminum flywheel... Or getting a clutch quadrant and firewall adjuster to make it to where the clutch is engaged higher on pedal engagment so you don't need to push it down as far to experience all the pressure..
I hope others chime in on this because I don't know for sure.
2016 Comp Orange GT (current)
Aurora - 2002 Boosted GT! (Sold, sadly)