Because I use my V70 for heavy loads from time to time, I'd like to install some Nivomats, in order to keep the car level under every load condition. Ordering them as an OEM set will cost approx $1000. This includes the additional hardware (softer springs etc.).
I' am wondering if there is a, not so expensive, alternative, such as air pressurized shocks or bellows which will fit in the springs.
Any suggestion would be welcome.

BTW it is a 07V70 2.5T

Tech might know.

If the coil springs do not have teh shocks running inside them then you can easily fit and run airbags in the car. I install them , very easy to fit and are the best way to have a car that rides well unloaded but can handle a good load when the bags are pumped up.
A 4" lift is very acheivable with airbags and it doesn't put big loads on the shock mounts like air shicks do.

Regards, Andrew.