I have a 1998 Taurus sedan with a 3.0L vulcan motor. I hear that you can use Moog P/N: CC859 rear coil springs from a 95 on a 98 rear. I would like to stiffen up the rear it's sagging. Moog 98 rear coil spring P/N: 80093 is the part number it calls for just tring to make sure it will fit. The 80093 is a constant rate spring and the CC859 is a Variable rate spring. Or should I just get Quick Struts. I put a trailer hitch on so I can pull a 4x8 trailer with my ZR7 for the long rides. Any answers to this thread would be app.