I have a 2001 suburban 4x4 that im thinking of lifting 6 inches to fit 35" tires, will 6 inch be enough or do i need a 7 inch and will they rub much? I dont tend to take it off road much just want to do it for the looks. Another question, how much power will i lose running stock gearing? Im still in highschool so i cant afford to do lift/tires/and gears at the same time