After reading too much information on this site, I ordered a toyotec ultimate lift kit. I was under the vehicle looking at some things in preperation for the lift install and I noticed that the left inner cv boot had a slight tear forming. I didn't mess with it too much,but I don't think the tear is all of the way through. I also saw that both the left and right have the smallest amount of grease around the clamp. The vehicle is a 2006 v8 4 runner 4x4 with 75000 miles. I then started to read about the axles and quickly had some questions come up. While I am installing the lift kit I would be right at the cvs. Should I just replace the boots with a boot kit (15-30 dollars)or replace the whole cv axle with napa auto one(60 dollars)? Should I replace both sides if one already went? I have read in this forum as well as others that auto part stores replacement boots are not of factory quality and strength? Is this true? Napa has a core charge so it seems like the axle you are getting would be a factory one, right? Does any one know for sure about the quality or is it just something that they heard from their brother's uncle's sister's nephew who used to work at a parts store? Thank you for your response.