Should I install an Independent Rear Suspension in my Ford 47 Pickup truck? I have been told the major advantage of an IRS over a solid axle has to do with the overall stability of the vehicle in different road conditions. These conditions may be uneven pavement, high speed cornering, etc. Since the IRS allows either side to rise or fall "independently" of the other side, the frame ( and therefore the body, occupants and center of mass ) remain in a relatively constant location. This leads to the vehicle being more stable. Any Thoughts ?