If you want to save cash,

Hilux cailpers and 200b or 240k struts are bloody unreal

Rear discs do make a pretty big improvment

if its a street car there is no need for coil overs at the front..

i had the hills with a highly worked z18 and hilux cailpers with 20 bucks pads and they work unreal

i cook a set of pads each run but the stopping power is unreal
only down side is they are heavy around 7kg or so for the pair of cailpers