BOLT IN REAR SUSPENSION ?

looks like you need a mini tub and the springs moved into the frame rails. that tire is huge, 11.18" wide and 27.87" tall.
HERE'S an example of one that's a little smaller and might fit, 275/40/17, 10.9" wide, 25.7" tall, but the rim will need to be in just the right place. what's the widest anyone has fit on one of these with out a mini tub?