I agree with everyone else on the ride quality associated with air lifts. I understand why you bought them, and thats fine. I had these on my 67 Camaro for about 6 years, and I got so sick of putting air in them all the time. I had 255/60s on the back and if I didn't keep 50 psi in them, the quarter lip would come in contact with the tire. I found this out the hard way.
Anyway, I switched from a monoleaf/airlift setup to multileaf springs,competition engineering traction bars, and monroe sensa trac shocks and the difference was
. I didn't think a 40 year old car could ride this good, lol. When I first started working on my cuda, I saw that it had air lifts on it and I ripped them off and put regular shocks on it along with a tire that would easily fit in the fender wells. 225/60/15. No more air lifts for me.