I had the air lift inside coil bags with the small onboard compressor on a previous truck (Ram 1500). They worked great! Kept them aired down for daily commuting, then just aired them up, right before a load of lumber was dropped into the bed or a trailer was hooked up.
I would get them for my Gen 3. I tow a trailer from time to time. Sometimes at night. You will blind every driver from a mile away, if you tow ANYTHING at night with these trucks!
That said, they will give a slightly stiffer ride, even aired down to, say, 5 psi. These trucks are so soft, tho, I’m not sure how much you will even notice.