I wouldn't let that scare you away from the conversion kit. As in everything there are pros and cons. The conversion is an upgrade over old worn out air suspension. However, as every lincoln owner knows nothing compares to the ride quality of the air suspension when it is working correctly. To me the tie breaker is the cost of maintenance. The air suspension is over twice the cost of the conversion kit and is still subject to failure later on. If ride quality is your main concern and money is noooo object then stick with the ari suspension. If consistancy and peace of mind is more imprtant not to mention keeping your wallet a little heavier then get the conversion kit. Either way you go it is still an upgrade on old worn out suspension parts.