Those lifts are nice but like other lifts of those designs, it's the minimum lift height, or basically how high the lift is laying on the garage floor, that's the killer.
The specs on these lifts are 4 13/16". I just measured my Z and, completely stock height, that's about the distance off the ground my rocker panels are. The front air dams on the front alone are an inch or two lower than that.
And if you are one of those that have lowered their car even 1/2"... that's gonna hurt.