Flush fit 20x10 front and rear?

[m4a]

I have a 2wd 84 SWB that has 31s on it currently but I'd rather take it in a different direction. I would like to run matching 20x10s front and rear so I can maintain the ability to rotate tires. I want a small drop (Western 2.5 front spindle and 4" drop rear leaf) because I don't want to tuck, I'd prefer the wheel be as close to the outside of the fender as possible even if I have to trim the fender lip. I want a similar stance to the old 15x10 with 4" b.s. running a 275 60 or 295 50, but in a modern size wheel. I was thinking a 20x10 with around a -25 et with a 275/40 or 295/35 could possibly fit without major modification and I could always push the rears further out with a spacer.