The tires will fit with no lift...just turn the t-bars a bit eliminating the rake of the vehicle and a very minimal amount of front cladding trimming should do. With the 913 (if they give 1 inch of lift) and a small amount of lift by turning the t-bar bolts you will be fine.
I ran the same size tire (BFG AT's) with the first option for about 6 mounths before lifting.