Another (will this fit?) Wheel and Tire ?

the rearend is an 8 1/4 from a 73 V8 Duster. I know because i called the junkyard today and ill be picking it up monday. If it doesnt have disc brakes and BBP it will when it goes under the car.

Now my main concern is how WIDE i can go in the back, I dont care if i have to go with a skinny pizza cutter up front because thats totally my diggs visually, Im mostly concerned with getting the absolute fattest tire i can fit out back with these style wheels and if it sticks out past the fender well thats fine as long as it doesnt rub.