I don't think it will work with just a 3" bodylift. For wide stance like that, would probably need a 6" suspension lift to clear for rubbing. Most trucks
I have seen with that wide of a stance have had 6" lifts.
As Curtis said, you have to watch out for your laws about what is legal. I think in my province tires
can't be 3" past the body, so flares are needed for anything over 3" past. Mine are about 2" with 12.50 tires on -12 offset.
Wonder if I would have the clearance now if I went with -12 or -24 offset w/ just the 3 in body lift? How did yours work out with the -12? Did you have any spacers on the front or fit them with ease?