go with 2'. pushes the tires out a little more for a good look. and u dont have to cut your wheel studs so if u want to return them to factory u can easily. make sure u get hub centric spacers.
This. Anything below 2" requires you to trim the studs. I am running 1.75" up front and 2" in the rear, on the fronts I had to trim about 1/4" off the studs, no threads, just the unthreaded portion at the tip of the stud. And you need hub/wheel centric for the OEM wheels since they do not have a conical lug seat for the lug centric style.
I ran them on my 2000 2wd for about a month before the spacers. I only lost about 10% or so of steering angle before my tires rubbed the radius arms. Obviously it would be worse on a 4wd with leafs though.
These are without spacers
And a stock shot to compare to stock offset.
And now with 1.75" up front 2" rear (came across a good deal on the 1.75s, then picked up the 2" to complete it)
With my 285/55R20s they are about dead even with the fender, maybe 1/4" inch or so past. I would say they stick out about 1/2-3/4" farther than the stock setup did.