It really depends...
...on your definition of easily!
Some surgery will be required.
Namely trimming the front cladding for turn clearance..( sharp box cutter works just fine)
..and cutting the cladding and grinding/cutting the metal brace behind front wheel.
Nothing structural....maybe an hours work...cut/drive/test..cut/drive/test.
Rear should not require any surgery, though clearance at front of rear wheel will diminish some due to rotational forward movement of axle given larger tire diameter.
And I do agree with Ryan ( LittleBeast)..."perfect" is very subjective relative to tire sizes.
Given you have a 1999..16 inch are right if you use original rims.
As for width....IMO..11.50 "looks" too skinny...
...I run 35x16x12.50 Mud Grapplers.
As for gas mileage...I get 10-12 short hop town driving....14-15 Highway.
Hope this helps
jo
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