I am thinking of using an air ride (shockwave) style suspension on the 39 Chevy that I'm building. I spoke to a tech at one of the suspension vendors today and he is advising AGAINST using air ride. He stated that many of the car builders that contact him refuse to build a air ride car. He sighted reliability issues with the system and components. I have not seen evidence of this in the forum threads but it may be a fact.

My car will be a driver so I'm interested in ride comfort as well as reliability. Also, since I'm wanting to install a triangulated 4 bar setup on my differential, he advised that I do away with my leaf spring GM 12 bolt in favor of a "steel housing" style, like a Ford 9". Is there not a retro-fit for the older leaf spring rear to use coil overs or shockwave suspension? My 12 bolt is out of an early Camaro or Nova.

Thanks for any help and or advice.

Pictures of my chassis: https://www.dropbox.com/sh/rvpqfe20gvwbizh/GVkhuPGqky

1939 Chevy Master Build Page:
https://www.dropbox.com/sh/887hu1rz7fpgn30/LXFeYRZrHq