I am interested in lifting my 96 T100 sr5 4x4 and this way intrigues me... A few questions though. Is it always required to have the shock spacer, I have es9000s that would also work with a 4inch lift. Do I need them? if so what material? Is this just a cheaper way to get 33"s on? (rather than full suspension lift) Do you notice the lift? Input appreciated.