Square wheel set up with rear spacers?

[xtractime]

Hey guys, anyone know if a square set up for 20 x 10.5 could work with rear spacers only to achieve the staggered look? I currently run a square 22 x 10.5 set up but with custom offsets so I cannot rotate the wheels. I have wheel fender flares and the 22" set up goes to the edge, but was wondering if I could achieve that or more with a 20 x10.5 set, same offsets, but rear spacers so that I could still rotate the tires/wheels. Unfortunately I do not remember the exact offset measurements of the 22" set I have. Thanks!