In your profile it says that you have a 2 inch lift, and the only people that make a 2" lift is skyjcaker, and that doesn't lower the traction beams, leaving the wheel aligned inward, although some special camber bushings will almost fix it completely). You put a 2" coil spacer on there and you will be riding on the side walls and it won't be alignable. The only safe way to do 4" of lift is either get a kit which will lower the beams down along with longer coils, or get some bent beams and use some longer coils, and you won't need to lower the beams. About how much lift it will take to fit the 33x14.50 boggers, it will probably take 6". For 35's you're going to probably need another 3" or so. Explorers aren't like fullsize trucks, you can't just put 33's on them stock.