1973 Duster Need Lots Of Help

You are going to get rid of the shackles and slapper bars right?
What are the size and Backspace of your front and rear rims? Size of the tires? What rear is currently under it?


Front is 15x8 4.5in back sbp
Rear is 15x10 2.5in back sbp

And no not getting rid of the shackles or traction bars.