Tires and Wheels fitment 2wd

[BIG ORANGE]

Once apon a time I saw a thread on here pretaing to sizes of wheels to accommodate lowered trucks and blazers 2wd but my cell want allow me to use the search feature.
I have 2wd blazer with 5 inch rear springs with shock relocators and drop shocks
The front is 2 1/2 drop spindles ECE and a 1 inch spring. Stock wheel tubs front and rear.
Would like to go with 20s but not sure about width and backspacing. Could someone bring up that thread fr me?
Thanxs guys.....
Happy Thanksgiving also