Right Hand Drive '69 Barracuda

Mopar 3" inboard spring kit fitted ( well tacked in ) Caltracs fitted and look they will work. New Dana 60 axle housing is now sitting on the leaf springs, not sure I have the front spring boxes in exactly the right place and the only real way to find out is to pop the axles in and fit the rear wheels and see where they sit , in realtion to the wheel opening??
We have a B’ body spring in an A body car, with tires way bigger than stock, man what a juggling act this is becoming, I hope all of my guesses are close to the truth.
Still what’s the worst thing that can happen eh…