Well my front driver's side wheel bearings are starting to go. I can hear the whining clearly. How difficult is it to replace the wheel bearings on the front wheels? I already have the new inner and outer bearings w/seals ready to go in. I have the Ciltons manual for my 92 4.0 but I'm worried since this is the first time attempting this. What grease do I need? Can I use synthetic? It needs to be done this weekend and I'm only changing the right side for now, since I only hear noise from the right. I have a 5.5 lift with 32s so do I need to buy some hi-lift jacks? Should I just get it done by a shop? How much time will this take me (first timer)? 2 hrs? 4? Any advice would be helpful. Thanks!