Does anybody know if the OME 863 springs only provide 3" lift with the stock bumper? called slee off road and they told me that if I use the stock bumper, the truck will get raised 4" in the rear. Also, they told me the 866 springs will raise my truck 3" with the stock bumper in place. I was planning to get a tube bumper with a spare tire carrier in the future, but for now all I want to do is raise my 100 series. Can I run the ome 863 springs right now and get only 3" of lift? Can I level out the truck with the torsion bars if it's raised 3" in the rear? Someone help me please. I want to order my parts ASAP