there are no struts in the rear, if you fit lowered springs you need the shocks to suit (if left with standard shocks they expand to far and under extreme driving conditions where you and 4x4'ing or jumping the car the lowered spring will fall out.... yes i have done this and learnt the hard way, it's a prick when the spring is rubbing on the tyre and you don't have a jack suitable with you in the middle of the bush... damn that car was fun... wonder if my current car coul.... no, bad idea)
fronts you can usually get away with stock shocks and lowered springs for "normal" driving conditions, if the car is jacked/hoisted up and the springs are free and able to be moved then it'll fail a rwc check, you can replace the shockers in the front without having to replace the entire strut.