You may get some bad driveline vibes with that much lift and a slip yoke. I know I have bad vibrations with a 4" lift but a 2" t-case drop fixed that. As for the tires, mine fit with only 4" of lift but theyre gunna rub. They actually get up into my fender and bang stuff up from time to time and I pretty much restrict myself to mud and the occasional trail.
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