Your main determining factor is the strenght of the IFS front end. 35's are the max you should run, and you can easily clear those on a 4" kit with some trimming, or on a 6 or 6.5 kit with no trimming. If you were to do a solid front axle swap, I would reccomend you start with a 3/4 or 1 ton truck, so you dont' have to swap the tranny/tcase/rear end to be up to the task.
The SFA swap is going to be a lot more expensive. If you're willing to trim a little, get the 4" rancho (actually more like a 5.5) wiht 35's, or get the Dick Cepek 6.5 with 35's and call it a day.
The SFA swap is going to be a lot more expensive. If you're willing to trim a little, get the 4" rancho (actually more like a 5.5) wiht 35's, or get the Dick Cepek 6.5 with 35's and call it a day.