Improving ground clearance of Toyota Voxy

[c20spit]

Hi,

 

Just bought a 2005 Voxy  2.0 4wd with in cab adjustable tein suspension, (if it makes a difference). I'm looking to improve the ground clearance with either some longer springs or a spacer, I'll do the back first then the front. Someone must have done this before as the clearance is laughable so I was just wishing to pick a brain or 2 as to what components they used.

Thanks