this will be the first "wavetrac" done by my mechanic. I will let you all know how that turns out.....I think the boys out there can handle a phone call if we have any questions...but I can't have two cars down, while we are waiting on shipping...can't do that to a friend who is loaning me his shop....if it were mine, that might work...we will get it right with their help....then we will be the experts...lol...after all, that was the first thing I asked before ordering...not everyone has a shop to tear things down, and take up that space while waiting...my mechanic has done semi tractor diffs, 10 bolt chevys, 12 bolt chevys, 9 bolt fords, and some dana's...so, I am comfortable with this install, but if you aren't then, take jim's advise...