spring over give what between6-7" lift, 2" lift in total is the regs for w.a un engineered and even with engineering lane change tests the max is like 150mm, so with the spring over your right on the max lift then what size tyres are u planning on running?
Yes Zoltan 50 mm is the max. Now the cops are fairly lenient on this and many get away with 100 mm but I think your lift will be like kicking a rottweiller in the balls when the cops see it
Some say it is still theoretically possible to have a SOA but with strict engineering supervision,eg by increasing the width of the axles to suit the height $$$
The engineering supervision is ongoing during the lift meaning stages of inspections
I would consult someone 1st to see what it entails before you start the mods.
Im sure WC springs could give you some advice as they get updates from the traffic branch