Loosened both sides. Did passenger side first, drivers side second. Had to remove filler tank hose bracket. Stretched brake lines. Left radiator in original position, as well as shroud. My fan shroud had a removable lower shroud, so to speak, so no fan contact is made. No perceptible change in temperature. Relocated an A/c hose attachment point on the hose itself, not bracket location. All in all, a good 1st time performance. Only thing I really don't like are the aluminum locknuts... May change for stainless steel ones.