Biggest tire on 1969 dart

Ok
So i see two people with the 5.5 backspace
And one person tried and wheels hit the springs
But his springs are in the stock location

I will measure for my backspace when I have a chance
But figured there are a lot of dart owners on here

My goal is to see how many people used the 5" backspace and if they had to cut or roll anything so they would fit.

And to see how many people ran the 5.5 backspace
And from what I have seen nobody's had to cut or roll anything with the 5.5
They only had to move springs in

The rear end is a stock a bodie 8 3/4