I did my balljoints 2 months ago and it took me 3 hours for both sides upper and lower. I'm a mechanic so I already had all the tools I needed and a lift which is very nice. I only had to replace 1 seal the outer axle seal on the drivers side. If your carefull you won't damage the seals and you can re-use them. The big axle seal came out easily on both sides and was not damaged so I didn't have to replace them. Clean up all the holes and clean them out and when you install the axles back in use some grease or oil to help lube it going back in the hole.