Epanding on Mark's post above.... Months ago I checked into the air lift springs for my 1965, but haven't ordered them yet. My '65 has the 5 inch lowering springs from CPP. Here is what I found out from Dan Urdahl of Airlift Company:
From:
[email protected]Subject: RE: Airlift Air bag Kit
I was able to find the perfect bag for you, In any coil sprung suspension we will want to be within ¼ of an inch on each measurement. I have a kit with bag dimensions of 5.5 (diameter) and 6.5 (height). It is kit number 60812 and I have no doubt that it will be compatible with the dimensions of those springs. The kit will also include the airline, fittings and inflation valves; everything you need to make the kit work. If you have any questions or concerns please feel free to contact me.
Thank You,
Daniel J. Urdahl
AirLift Company