Post your wheel and tire combos.

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Rear
Mini tub & spring relocate
355/30/19 tires 19x12 rims (50mm offset, but I have a modest narrowed rear. It’s just under stock A body width).
If you look at most 12” or 13” wide rear rims you will find more off the shelf rims will have around a 50mm offset.

Front
275/35/18 tires 18x9 rims 30mm offset
And I have different set I run
285/30/18 tires 18x9 1/2 rims 35mm offset
There are many different combos that fit on the front. It all depends on what your front to rear proportions look like afterwards.

There are a lot of so-called gurus on this site that like to repeat over and over what fit on their car. Just measure your own car and remember there is 25.4mm in an inch when doing your math.

if you need a plan to build a rear end for you car I can give you drawings (stock or tubbed) and even where to weld on things like sway bar brackets.