Can I fit a 8" wide wheels on a 67 Dart?

I have 245's BFG Comp II's on the rear with a 17x8 rim but these were a custom order. They fit well but I measured 100 time before I pulled the trigger.
Now I have have LBP front an rear. My rear have 11x2 drum that widened the rear track and 73-up front discs that also widen the front track. Somewhere on this site I posed the backspacing I ordered. My rear springs are in the stock location too, but my inner fenders are rolled.

So it will work but the backspacing is key. Measure, Measure, and Measure again. An extra rim to measure with on the car helps, or get a Percy's wheel rite.