Its meant to be higher at the rear . as the rear gets lower than the front ( after a conversion for instance ) the steering will get light and the van will have less traction in front ( depends on 2 or 4 wd and power of the motor obviously )I measured mine today and the rear is currently 10mm higher than the front. The van is currently empty so it will probably level out when I kit it out not that you can tell it's only 10mm.