[IROC]

Lifting a Toyota front suspension does not change the travel that the wheel moves thru - that travel is defined by the length of the shock (in droop) and the bump stump (in compression). Installing a lift only changes the nominal position of the wheel in that overall travel. Since the actual wheel travel doesn't change, the angle that the CV joints see also does not change (at the extremes of travel). So, the lift itself does not induce more wear or stress on the CVs. Also for this reason, differential drops and the like don't have any real effect on the CVs. The lift itself likely had no effect on the CV joints and they probably just need maintenance.

If you installed some long-travel shocks with the lift (Bilstein 5100s for instance have an additional 1" of travel in the front) you might have some additional wear, but I am not sure the 1" would even make a difference. That vehicle doesn't look like it gets a lot of hard offroad use. I would just replace the axles with stock replacements and I bet you'll be fine.