73 Duster wont handle

There is a picture of my car on my profile. It has brand new shocks all the way around. It was a slant six car from factory and the guy before my put the 340 in. It does have v8 tortion bars..just been aligned. Tires on the back are new..bf goodrich if i recall. Tires on the front are some cheap brand that came with the car and they are low pros..havent changed em out for bf goodriches yet..need any more info just ask..thanks for all the help