I want to lift a 85 3/4 ton Suburban to fit 40\" tires 1)Well, the first quetion would be, how much lift? I would like to include a 3" body lift into the overall lift, so I guess I need to know how much suspension lift to go with a 3" body lift. 2) How much trimming would be needed on the fenders? 3) are there any other things to worry about that a suspension kit wouldn't include? 4) which brand is recommended? I would like to get new springs to replace the old one. I didn't have too much sucess with the search thanks!