broaden your search to also include the H&R coil over system from CRS ,it is the market leader in design, damper technology, and more importantly reliability.
The struts are shorter which helps comfort and the A R B bracket is better positioned to maximise roll limitation
50 to 80 mm lowering
Adjustable front damper stiffness
Proper coil over kit ( not a sleeve over )
3 way valve systems from KONI
Out lasts all competitors
The most comfort for this market segment
Spring rates to suit all different weight vans