Can vb air suspension be fitted after Alko self levelling has been fitted.

[Tex1]

Hi had an AL-KO hy4 levelling system fitted to my Burstner ixeo on a fiat Ducato chassis.
I would like VB full air 2c fitted to the rear axle but there seems little room between the footplate and the rear face of the chassis (11.25inches) to fit the air bag and new spring.
wondered if any one has the same set up.

 

[Tex1]

My local dealer (Newport caravans) say they can fit vb 2c rear to my van. Might have too change the mounting brackets for the rear hy4 jack's for it to fit.
will post the results when hopefully fitted