I tow about 8500# boat with my 6.2 AT4 on stock suspension. I added sumosprings blue without the spacer and fixed the issue without ride quality change unloaded and cheaper/less complex than bags. I put them on yesterday in about 20 minutes and completed a 300mile tow last night. wasn't blinding oncoming traffic like previously. nice and level. cheers.
Did the reverse yesterday also and it is back working fine. The parts number is now superseded so hopefully it's upgraded on newer models Sent from my iPhone using Tapatalk