I just ordered some subframe spacers from SpecialtyZ and have one question: If I were to take my car to a Midas shop or something and have them lift the car, would it make them easier to install? The reason I ask is because in the instructions provided, it says to jack up the car via the rear differential, which will also support the subframe. One other question: If I use the floor jack method instead, do I need to jack up the front of the car to install the front ones, or will jacking up the back allow me to get under and reach the ones in front?