Disco 2 Airbag helpers with decent articulation?

I would like to fit airbag helpers inside the springs of my D2. Originally converted my D2 to springs because of the idiotic location of the ride height sensors which i constantly destroyed while offroading. also the springs allow for better articulation as they have the ability to dislocate.

i would like to fit a set of in-spring air bag helpers because i have found when im overlanding the rear tends to sag a little bit. is there anyway of fitting these without having to fix the springs in place and allow that movement? i have had times when the spring came out of pace and had to fit a relocation cone, which obviously now i will have to remove or maybe modify

I have those in my D1 so can't comment on the springs dislocating

But for better articulation you might want to allow each bag to be connected to the other bag . I think a valve might be required to stop this airflow for use at highway speeds though