18" Wheel help

Just dropping this info here I have American Racing Thorque Thrust 18 x10's on the rear of my 71' Dart with a stock A-body 8.75 rear end, but the car has to be mini tubbed with a spring relocation kit and the wheels need to be back spaced 6 1/2" and if you plan to run the exhaust out the rear you will have to run the exhaust over the leaf spring from inside to the outside but you can get 2 1/2" tubes work just fine.