lifting 3 inches will put more stress on your CVs for sure, almost everyone with a 3 inch or more lift has had at least one boot tear, sometimes its not for months or years though, some have a torn boot before their vx even makes it out of the driveway

i have been hearing some recently that the cvs can handle 2 inches without much issues... seems hard to believe that 1 inch would make that much difference but its gotta be better than 3.. if you drive mostly street anyway why not go with a happy medium and use 2" spring spacers in the rear and crank the front torsion bars for a 2" lift