Replacement of air bags in springs

[Btroy]

On my 95 Columbia it had air bags in the front coil springs.
I still have the air lines but the bags in the springs are long gone. This appears to be a simple replacement but just looking to see if anyone replaced theirs.
If so is there a recommended brand.
Thanks for any input.

[Mr Sunshine]

Can you find the manufacturer of the system? Can you tell if it is aftermarket? There are companies out there making these, maybe you'll be lucky and the folks that made your system is still in business.