Turning Radius

Front end alignment/ wheel offset/ tires/ tire size.............Are they same engine? (weight)
Are steering wheels same size?

One "easy" thing you might (be able to do) is swap front tires and try again

They are kinda different animals. The Barracuda is street car with a 360 and has a 6" wheel and 205/65R15 tire. The Duster is a drag only car so it's a 440 with fenderwell headers that limit front tire size, but I have a 26" tire on it, but only a 3 1/2" wheel. Even with the big block the Duster turns alot easier, but that's due to the smaller width tire I'm sure. It almost has to have something to do with the stops on the Barracuda, because even before I swapped to the disc brakes and ran the factory 9" drums the car never seems to turn overly sharp.