front diff seals

looking for some info or help my brother has a 08 tacoma and we just did a front leveling kit and now the seals are leaking where the cv axles go into the front diff, they were leaking slow before the job but now dripping a lot, can these seals be replaced if so what are they called and how haed are they to replace? thanks

 

Are they both leaking (pass and driver side) or just one?
Front axle Seals can be replaced. Not a big job, just tedious because so many parts have to be removed.

 

both sides,

 

Same problem