Engine, suspension, transmission, interior, most of the parts is exactly the same. Steering feel is the same because itís the same components, same power steering and the same weight on the front wheels. Gearshift is the same as itís the same box, same gear linkage, same bushes.... Interior is the same except seats and gearshift lever trim so you might not even notice you switched the car
I drove GT only briefly, but the only differences I found is different (not better, not worse, just different) wind sound at speed due to different aerodynamic and probably the handling is closer to 156 due to different weight distribution and maybe more stable rear at high speed braking.
But if I had the choice, I would get the GT instead of 3door 147. You are getting the same car, but with a bigger boot and coupe looks.
147GTA,Grigio Metallico,Imola leather, 3.75l conversion,F360 TB,ported heads,Balduzzi cams,GTV manifolds,EQ pipes,Supersprint silenced cat back,18" GT multispokes,KW V3,Galfer 6pot 355mm,Brembo sport rear, Blaupunk NewYork 800 + Focal
147 1.6TS, Nerro,Beige Interior,Galfer Extreme Brake kit,2,0TS intake manifold,Custom ex. manifold,200CPI cat,Supersprint silenced center + OO backbox,GTA spoiler,GTA side skirts,GTA headlights,Blaupunkt LA MP74 + Focal + MacAudio + Dynamat + HERZ subwoofer